Results 101 to 110 of about 772 (149)

低分子有机酸对土壤中Pb形态的影响

Shuitu Baochi Xuebao, 2011
为探讨螯合诱导修复技术的作用机制,研究2种低分子有机酸即柠檬酸和苹果酸对土壤中重金属Pb各形态的影响。结果表明,对于人工模拟不同污染程度的PbⅠ～PbⅣ土壤,随着柠檬酸和苹果酸添加浓度的升高,土壤中最具活性的可交换态Pb百分含量均有不同程度的提高,从而达到了活化重金属Pb的目的;Pb活化效果随柠檬酸浓度升高而升高,随苹果酸浓度升高呈先上升后基本不变趋势,当有机酸浓度为10,20 mmol/kg时,苹果酸和柠檬酸活化Pb效果分别达到最优;二者相比,柠檬酸活化Pb效果优于苹果酸的活化效果。
钱翌, 刘莹, 彭晓丽
doaj  

铁氧化物影响土壤硝化作用动力学的作用机制

Shuitu Baochi Xuebao, 2016
为探究铁氧化物对土壤硝化动力学的影响,以全铁含量低的酸性潮土（pH 4.9）和中性潮土（pH 7.2）为研究对象，通过7 d的室内恒温（28 ℃）培养，研究了不同pH土壤在添加0%（对照），0.5%，1%，3%，5%，10%（重量比）铁氧化物后的硝化动力学过程。结果表明：铁氧化物加入量超过3%,则改变中性潮土的硝化动力学过程由一级变为零级模型。不同含量铁氧化物加入后，酸性潮土的硝化过程均符合一级动力学模型。加铁处理的酸性潮土，其净矿化速率均显著高于不加铁处理。加铁量为10%处理的净矿化速率为4.12 ...
赵永鹏, 李仕伟, 黄学茹, 张荟婷, 罗红艳, 蒋先军   +5 more
doaj  

[Determination of 26 herbicide residues in soil， sediment， and surface water samples using modified QuEChERS method combined with ultra-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Zhao L, Ma L, Huang LQ, Chen JB, Zhu WF.
europepmc   +1 more source

[Effects of lunar soil simulant and Earth soil on lung injury in mice]. [PDF]

Zhong Nan Da Xue Xue Bao Yi Xue Ban
Gong X, He S, Chen Y, Liu Y, Cheng Q, Chen Y, Hu X, Wang Z, Xie H.   +8 more
europepmc   +1 more source

[Evaluation of Gradient-Variant Quantum Dot Fluorescence Technology for Rapid Detection of <i>Brucella</i>]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Li J, Wang X, Wang J, Tian S, Zhao C, Wang X, Jian W, Li S, Zhang Q, Zhou L.   +9 more
europepmc   +1 more source

[<i>Lactobacillus plantarum</i> alleviates lead exposure-induced learning and memory impairment in mice by regulating bile acid metabolism and inhibiting hippocampal NLRP3 expression]. [PDF]

Nan Fang Yi Ke Da Xue Xue Bao
Li L, Yu W, Tan M, Li Y, Liu A, Meng X.
europepmc   +1 more source

[Determination of organophosphate diesters in facility vegetable soils using ultra-high performance liquid chromatography-electrostatic field orbitrap high resolution mass spectrometry]. [PDF]

Se Pu, 2023
Liu M, Wang M, Zhao A, Zhu L, Wang C, Wei C, Liu W, Xu J.   +7 more
europepmc   +1 more source

[Research Progress on the Biological Functions of Intestinal Eosinophils and Related Diseases]. [PDF]

Sichuan Da Xue Xue Bao Yi Xue Ban
Dou M, Zhang Y, Li M.
europepmc   +1 more source

[Applications of molecularly imprinted solid-phase microextraction coupled with chromatography/mass spectrometry for determination of drug residues]. [PDF]

Se Pu
Yan J, Huang J, Peng S, Man M, Sun D, Liu P, Chen L, Li J, Fan H.   +8 more
europepmc   +1 more source

[Determination of 15 carbonyl compounds in soil using improved solid phase extraction-high performance liquid chromatography]. [PDF]

Se Pu, 2023
Xue KP, Yu LY, Ren XF, Tu BF, Chen C, Xu T, He H, Hu S.   +7 more
europepmc   +1 more source