Association of the levels of heavy metals and trace elements during pregnancy with congenital heart defects in offspring: a prospective cohort study. [PDF]
Zhongguo Dang Dai Er Ke Za Zhi, 2022 Liu JT, Zhou YW, Wang WD, Mao BH, Hu YG.
europepmc +1 more source
, 1999 通过电化学研究，探明了氨性溶液中砷黄铁矿阳极氧化的反应机理。氨水溶液中，砷黄铁矿的氧化为一不可逆过程。起始阶段，氧化生成含铁氢氧化物的表面膜，并有中间态产物元素硫生成，元素砷被一步氧化为砷酸盐；中间态元素硫在第二步中进一步氧化成硫酸根。氧化生成的表面膜对反应有抑制作用，该表面膜具有多孔性，可使反应稳态进行。低温时，氧化过程受电化学过程控制，氧化过程的速率控制步骤为电子通过含硫层的转移过程；高温时，扩散过程控制着反应的进行。总反应方程为：FeAsS + 11H_2O = Fe(OH)_3 + SO_4 ...
余景开
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[Exposure to Lead, Arsenic, Mercury, and Cadmium in Populations in Sichuan and Chongqing : A Comparative Study of Reference Intervals Derived From Direct and Indirect Sampling Methods]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanNie M +8 more
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, 2015 将氧化亚铁硫杆菌(T.f)用于砷黄铁矿与软锰矿共同浸出,设置无菌体系作为对照,提出有氧和无氧条件下Fe As S-Mn O2的反应模型。研究结果表明:氧化亚铁硫杆菌对砷黄铁矿还原浸出软锰矿具有明显的催化作用,在砷黄铁矿与软锰矿的质量比为1:3.6、反应p H为1.8的最优条件下,有菌体系下锰的浸出率达99%,后续金的氰化浸出率达95%以上;Mn2+会抑制细菌的生长,当ρ(Mn2+)≥30 g/L时,Mn2+对细菌有致死作用;从软锰矿与砷黄铁矿的循环伏安曲线可看出两矿均有明显的氧化还原峰 ...
冯雅丽 +4 more
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[Construction and practice of the "Construction Supports Competitions-Competitions Nurture Teaching-Teaching Promotes Learning" closed-loop innovative teaching mode： a case study of micro-plasma emission spectrometer setup and trace element analysis experiment]. [PDF]
Se PuXue WY +8 more
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Roles of m6A modification in neurological diseases. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue Ban, 2022 Zhang Y +5 more
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, 2008 研究石煤砷的赋存形态,有助于评价石煤砷向环境中释放的程度和能力,本文利用连续化学浸提法对陕南石煤砷进行连续浸提,并以贵州兴仁地区无烟煤进行对照.结果表明,石煤砷主要以硫化物结合态存在 ...
唐磊, 虞江萍, 季宏兵
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Association of urinary cadmium and arsenic with gynecological cancers: Results from NHANES 2003-2018. [PDF]
Zhong Nan Da Xue Xue Bao Yi Xue BanJiang Y +6 more
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, 2008 施肥是提高重金属污染土壤的植物修复效率的必要强化措施之一.通过研究农业生产中常用磷肥对砷超富集植物蜈蚣草生长、砷累积及氮磷钾吸收的影响,确定可提高蜈蚣草修复砷污染土壤能力的最佳磷肥类型.结果表明,与不施砷对照组相比,添加砷处理中施用相应磷肥的蜈蚣草总生物量中蜈蚣草均有所降低(除钙镁磷肥外);在添加砷的情况下,钙镁磷肥、磷酸二氢钙和磷酸二氢铵等3个施磷处理总生物量相对较高,显著高于其他磷肥处理和不施磷处理(0.83g/pot);地上部砷累积量由大到小的顺序为:磷酸二氢钙>钙镁磷肥>磷酸二氢铵 ...
肖细元 +5 more
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[Effectiveness of innervated medial plantar flap for reconstruction of soft tissue defects following foot tumor resection]. [PDF]
Zhongguo Xiu Fu Chong Jian Wai Ke Za ZhiZhang W +8 more
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