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Many studies have suggested that organic matter (OM) substantially reduces the bioavailability and risks of mercury (Hg) in soils and sediments; however, recent reports have supported that OM greatly accelerates Hg methylation and increases the risks of Hg exposure. This study aims to summarize the interactions between Hg and OM in soils and sediments and improve our understanding of the effects of OM on Hg methylation. The results show that OM characteristics, promotion of the activity of Hg-methylating microbial communities, and the microbial availability of Hg accounted for the acceleration of Hg methylation which increases the risk of Hg exposure. These three key aspects were driven by multiple factors, including the types and content of OM, Hg speciation, desorption and dissolution kinetics and environmental conditions.

Objectives The survey is based on status of sexual health and sexual needs for male patients with acute myocardial infarction and Percutaneous Transluminal Coronary Angioplasty (PTCA) plus stent implantation. The survey data provides the basis for guiding patients’ health education. Methods General questionnaire, sexual knowledge status questionnaire and sexual health knowledge demand questionnaire were carried out by 214 cases of patients with PTCA plus stent implantation. Collected data entered into a database for statistical analysis. Results The sexual health overall score of 214 patients is 8.79 ± 2.52. There is a statistically significant difference (P 0.05) in different age. The knowledge of sexual health demand overall score is 29.40 ± 6.47. There is a statistically significant difference (P 0.05) in different monthly income. Conclusions Patients with PTCA plus stent implantation, the sexual knowledge cognitive level is low. For the higher demand of sexual health knowledge, the medical personnel should strengthen the knowledge of sex education for patients to improve the quality of sex.