Results 121 to 130 of about 803 (154)

[Preparation of porous boron nitride-doped polypyrrole-2,3,3-trimethylindole solid-phase microextraction coating for polycyclic aromatic hydrocarbon detection]. [PDF]

Se Pu, 2023
DU J, Sun PC, Zhang ML, Lian ZT, Yuan FG, Wang G.   +5 more
europepmc   +1 more source

太湖流域典型蔬菜地土壤氮及pH空间变异特征

Shuitu Baochi Xuebao, 2005
以太湖典型地区宜兴市大浦镇湖滨公路以东50hm2蔬菜地为研究对象,网格法(50m×50m)采集表层(0～20cm)土壤156个,采用传统统计和地统计学相结合的方法,研究了土壤氮素及pH的空间变异特征。结果表明:土壤全N和NH4 -N有明显的空间变异结构。全N符合指数模型,NH4 -N变异函数符合线性模型,全N有强烈的空间相关性,NH4 -N有中等的空间相关性。土壤pH普遍偏低,pH变异函数符合指数模型,在小范围内具有强烈的空间相关性。土壤碱解N与pH呈显著负相关,表明施用氮肥是导致土壤pH下降的主要原因。
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[Applications of functional materials-based solid phase microextraction technique in forensic science]. [PDF]

Se Pu, 2023
Xie WY, Zhu XH, Mei HC, Guo HL, Li YJ, Huang Y, Qin H, Zhu J, Hu C.   +8 more
europepmc   +1 more source

[Determination of <i>N</i>-（1，3-dimethylbutyl）-<i>N'</i>-phenyl-<i>p</i>-phenylenediamine-quinone in urine and dust by ultra performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Lu ZL, Deng FF, Bai ZJ, Peng RF, Tan L.
europepmc   +1 more source

The life and work of Dr. Fan Qingsheng: a pioneer in antibiotics research, agricultural microbiology, systems agriculture, and agricultural education in China [PDF]

CS Fan, CS Fan, JR Watt
core   +1 more source

[Research advance of solid-phase microextraction based on covalent organic framework materials]. [PDF]

Se Pu
Cheng YC, Gao YY, Li XM, Chen LY, DU F, Guo J, Meng YT, Sun M, Feng JJ.   +8 more
europepmc   +1 more source

[Recent applications of porous-material-based adsorbents for extracting pesticide residues from environmental and foodstuff samples]. [PDF]

Se Pu
Xu QT, Yu M, Xie C, Cao Y, Mei SR.
europepmc   +1 more source

[Synthesis of fluorinated nitrogen-rich porous organic polymers and removal of perfluorooctanoic acid from water]. [PDF]

Se Pu
Chen X, Qian WP, Chen TQ, Shao LY, Zhang WF, Zhang SS.   +5 more
europepmc   +1 more source

[Determination of 35 antibiotics and four β-receptor agonists in teenagers and analysis of exposure status]. [PDF]

Se Pu
Hu XJ, Li ZH, Xie LN, Fu H, Zhu Y.
europepmc   +1 more source

[Determination of 26 perfluorinated and polyfluoroalkyl compounds in human serum by solid-phase extraction-high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
Yue YX, Bian YT, Cheng YF, He L, Wang D, Yan PX, Yan W, Liu GY, Song H, Liu LP.   +9 more
europepmc   +1 more source