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Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Forensic Science & Technology is the property of Institute of Forensic Science, Ministry of Public Security and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A method of ultra-high performance liquid chromatography-quadrupole / electrostatic field Orbitrap high resolution mass spectrometry was developed for the determination of 16 organophosphate esters (OPEs) in water and sediment samples. The water samples were extracted by solid phase extraction (Oasis HLB column) while the sediment samples were ultrasonically extracted using 0.1% formic acid methanol and then purified using Sep-Pak PSA column. The treated samples were separated on a Hypersil Gold-C18 column (1.9 μmx2.1 mmx50 mm) and eluted with 0.2% aqueous formic acid solution and methanol. The detection and analysis were performed in electrospray ionization and dd-MS2 + confirmation, in positive mode. The analyzed 16 OPEs were quantitated by external standard method. The lowest detection limits were 3.10- 116.70 ng/L and the linear correlation coefficients were 0.940 7-0.999 8. The developed method was used to analyze the target compounds in water samples and sediment samples from Luoma Lake. In 21 water samples, the concentrations of ∑16OPEs were in the range of 2.99-1 113.09 ng/L, with a median concentration of 408.68 ng/L and an average concentration of 420.03 ng/L. In 6 sediment samples, the concentration of ∑16OPEs were in the range of 15.70-41.28 ng/g, with an median concentration of 27.06 ng/g and an average concentrations of 27.49 ng/g. Compared with the data reported from other water bodies in China or other countries, the concentrations of OPEs in Luoma Lake were at a median/low level. Ecological risk assessment showed that triphenyl phosphate (TPhP), tri-o-cresyl phosphate (o-TTP), tri-m-tolyl phosphate (m-TTP) and tri-p-tolyl phosphate (p-TTP) could pose medium or high risks to water and sediments in Luoma Lake at some sites [ABSTRACT FROM AUTHOR]

Copyright of Journal of Chinese Mass Spectrometry Society is the property of Journal of Chinese Mass Spectrometry Society and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Surfactant Detergent & Cosmetics (2097-2806) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Experimental Technology & Management is the property of Experimental Technology & Management Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Surfactant Detergent & Cosmetics (1001-1803) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Research of Environmental Sciences is the property of Research of Environmental Sciences Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

[Objective] This study determined the residual level and risk of imidacloprid and acetamiprid in soil of Lycium barbarum 1.orchards in Ningxia to provide basis for the healthy development of Lycium barbarum 1. industry. [Method] In 1, 3, 6, 9, 12, 15 and 18 years (abandoned for 2 years) old Lycium bar barum 1.orchards, soil samples were collected in four horizontal directions (3 cm from plant trunk, directly below canopy, canopy edge and 50 cm from outer edge of canopy) and five vertical directions (0 -- 20, 20 -- 40, 40 -- 60, 60 -- 80 and 80 --100 cm directly below canopy), and the residue characteristics of imidaclo-prid and acetamiprid of soil were determined by liquid chromatography-tandem mass spectrometry. The environmental risks of imidacloprid and acetamiprid were evaluated by risk quotient method, and human body exposure risks were evaluated by the United States Environmental Protection Agency (USEPA) method. [Result] 1 The overall residues of imidacloprid and acetamiprid were ND--162. 66 ng/g (average 37. 33 ng/g) and ND--101. 50 ng/g (average 24. 30 ng/g), respectively. In the horizontal direction, the residues and detection rates of the two pesticides below canopy were low. In 0 -- 100 cm soil layer, the residues decreased sharply with the increase of soil depth. 2 With the increase of planting years, the residues of imidacloprid and acetamiprid in surface soil increased gradually with the increase of planting years from 1 to 12 years. The neonicotinoid pesticides were enriched in 80 --100 cm after 15 years. 3 There was moderate risk of neonicotinoid pesticides in the surface soil for 3 to 15 years. There was medium to low risk in the 20 -- 60 cm layer for 3 to 12 years, and no potential risk in the 60 --100 cm layer. 4 The main exposure risks of imidacloprid and acetamiprid in soil of Lycium barbarurn L. orchards were soil intake and skin contact. The potential exposure risk of children to imidacloprid and acetamiprid in soil was higher than that of adults, but the neonicotinoid pesticides in soil had no harm to residential health. [Conclusion] The residues of neo-nicotinoids in soil of Lycium barbarurn 1.orchards in Ningxia were low with medium or low risks to ecological environment and no risks to human health. [ABSTRACT FROM AUTHOR]

Copyright of China Surfactant Detergent & Cosmetics (2097-2806) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Persistent organic pollutants (POPs), pharmaceuticals, personal care products ( PPCPs) and disinfection by products (DBPs) have raised significant concerns for their potential ecological threat to the environment and human health. Research on their source, detection method, environmental distribution, migration and transformation has become the hot topic. OBJECTIVES; To introduce recent analytical techniques and applications for the determination of POPs, PPCPs and DBPs in environmental and biota samples, and summarize the extraction, separation and instrumental analyses of the halogenated emerging organic pollutants. To discuss future trends for improving the POPs, PPCPs and DBPs analyses and potential emerging organic pollutants. METHODS: In recent years the analytical techniques for emerging organic pollutants have made great progress. According to the nature of samples, a variety of extraction methods have been used, such as accelerated solvent extraction and solid phase microextraction. Effective clean-up steps include GPC, multi-layer column and SPE. Conventional analytical methods of emerging organic pollutants have been based mainly on GC-ECD. With the fast development of chromatography and mass spectrometry, congener-specific analysis has become a mainstream method. The analysis of certain emerging organic pollutants at trace levels is now a routine due to the advancement of HRGC-HRMS. RESULTS: Methods for the analysis of emerging organic pollutants in a variety of environmental, biota and food matrices have been well developed during the past several decades. However, the analytical challenge still remains for a direct analysis of emerging pollutants. For example, short chain chlorinated paraffin has more than 7000 kinds of congeners. The traditional analytical methods cannot achieve their separation, and accurate qualitative and quantitative analysis of these pollutants is challenging. CONCLUSIONS: Tlie analytical technique for emerging organic pollutants still has a long way to go. On the one-hand, it is necessary to explore effective pretreatment techniques such as magnetic solid - phase matrix dispersion extraction technology to reduce the possible interference. On the oilier liand. it is necessary to improve the recognition, sensitivity, accuracy and practicability of chromatograhY mass spectrometry techniques such as comprehensive Two-dimensional Gas Chromatograhy and Fourier Transform Mass Spectrometry and develop a simple and standard quantitative method. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Pesticide Science / Nongyaoxue Xuebao is the property of Chinese Journal of Pesticide Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Tea Science is the property of Journal of Tea Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mycosystema is the property of Mycosystema Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Surfactant Detergent & Cosmetics (1001-1803) is the property of China Surfactant Detergent & Cosmetics Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Xi'an Polytechnic University is the property of Editorial Department of Journal of Xi'an Polytechnic University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)