Search

Immunoassay for heavy metal mercury has the advantages of simple operation and high sensitivity,which can be used to screen the concentration of Hg in samples with high throughput and finally to be used as assistive tools for traditional instrument detection. Haptens,antibodies and responding signal detection systems of Hg are the key to Hg immunodetection. Based on the haptens of Hg-chelating agents and Hg-glutathione,the researchers have prepared mercury antibodies with different properties and constructed a variety of rapid immunoassays for mercury. In this paper,the structure design and antibody binding properties of mercury hapten were reviewed from the perspective of antibody preparation. Meanwhile,the research progress of immunoassay based on different signal transformation was introduced,and the future development trend was prospected as well. [ABSTRACT FROM AUTHOR]

Thermophilic aerobic fermentation (composting) is an important biotechnology for the treatment and resource utilization of various organic solid wastes. However,conventional composting restricts a wide application due to its low fermentation temperature ranging from 50°C to 70°C,long composting period and unsatisfying compost quality. Recently,an innovating technology of hyperthermophilic composting (also known as hyperthermophilic aerobic fermentation) has been developed and confirmed to overcome the shortcomings of conventional composting in engineering practice. Compared to conventional composting,it can run at high temperatures over 80°C for 5 to 7 days by the inoculation of hyperthermophilic bacteria,which results in the advantages of accelerated humification and effective pollution control. This paper aims to review the recent research progress on the development process,key technical characteristics,and the accelerated humification and pollution control mechanisms of hyperthermophilic composting,including the emission reduction of N2O,the removal of antibiotic resistance genes,the biodegradation of microplastics,and the passivation of heavy metals. This review will provide theoretical and practical guidance for treating and utilizing organic solid wastes by hyperthermophilic composting. [ABSTRACT FROM AUTHOR]