[Determination of trace perfluorinated compounds in environmental water samples by dispersive solid- phase extraction-high performance liquid chromatography-tandem mass spectrometry using carbon nanotube composite materials]. [PDF]
Se Pu, 2023 Song XL +6 more
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Shuitu Baochi Xuebao目的为定量解析黄棕壤坡面耕作措施对侵蚀能量的分配与耗散机理，并阐明其抑制土壤剥离的物理阈值。方法本研究选取典型黄棕壤，设置8°、15°、25° 3个坡度，通过室内模拟降雨试验，对比研究顺垄+横垄（LR&CR）、垄台（FR）、垄向区田（SR）及平坡对照（CK）4种措施的产流产沙及能量动态特征，构建基于能量指标的侵蚀量化模型。结果保护性耕作（LR&CR、SR）通过延长径流路径和促进入渗，构建“源头减能-过程耗散”双路径系统，其减能效果显著优于FR，LR&CR在各坡度下减沙率最高（8 ...
刘洋 +5 more
doaj
[Determination of bisphenols in sediment by accelerated solvent extraction and solid-phase extraction purification coupled with ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]
Se Pu, 2023 Wang QX, Feng QY, Zhu XQ.
europepmc +1 more source
Roles of long non-coding RNAs in digestive tract cancer and their clinical application. [PDF]
Zhejiang Da Xue Xue Bao Yi Xue Ban, 2023 Zhang Z, Wang X.
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Shuitu Baochi Xuebao, 2008 根据金沙江干热河谷元谋地区红土层非常发育的裂隙现象,对该地区典型区土壤裂隙形成的环境和土壤剖面进行了调查,并采样进行相关土壤理化性质测定、粘土矿物X-射线衍射分析以及土壤微形态研究。结果表明:(1)该区旱季丰富的土壤裂隙形成与该区主要分布的第四系古红土层(QS)和第四系元谋组的黄棕色土层(QY)等红土母质特性有密切关系;(2)由于土壤裂隙非常发育,成为了边坡崩塌和直接产生重力侵蚀的成因,加剧了土壤侵蚀过程,导致了土柱和土林等强侵蚀景观形成。研究表明 ...
何毓蓉 +6 more
doaj
[Chiral separation of new chiral insecticide pyraquinil isomers and establishment of analytical methods in vegetables]. [PDF]
Se Pu, 2022 Chen Y +6 more
europepmc +1 more source
[Efficient enrichment of pesticides from environmental water samples by cobalt-nickel double metal hydroxide nanocage/multiwalled carbon nanotube composites]. [PDF]
Se Pu, 2022 Wang X +5 more
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[Determination of adsorbable organic halogens in textiles by ultrasonic extraction-high temperature combustion absorption-ion chromatography]. [PDF]
Se Pu, 2022 Ding Y +6 more
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Shuitu Baochi Xuebao, 2011 采用室内人工降雨模拟试验的方法,对不同土壤前期含水量的棕壤坡耕地养分流失特征进行了实验研究.研究结果表明:土壤前期含水量低于20%时,土壤硝态氮主要是以淋溶的形式流失;高于这一含水量时,土壤硝态氮流失途径除了淋失外,还存在径流流失现象.径流中磷离子和钾离子浓度随着降雨时间的增加逐渐减少,流失量与前期含水量不呈线性关系,而是呈近似抛物线关系,在前期含水量为10%～15%之间存在拐点.通过坡面物质流失量(NO3--N、SEP、DP、K+和产沙量)与前期土壤含水量的二次多项式关系,得到最优前期含水量值为11 ...
赵野 +4 more
doaj
[High-throughput screening of multi-pesticide residues in animal-derived foods by QuEChERS-online gel permeation chromatography-gas chromatography-tandem mass spectrometry]. [PDF]
Se Pu, 2023 Li J +6 more
europepmc +1 more source