Results 111 to 120 of about 827 (154)

[Assessment on data processing methods for nontarget identification of per- and polyfluoroalkyl substances using liquid chromatography-high-resolution mass spectrometry]. [PDF]

Se Pu
Zhang BX, He QW, Han BC, Ma CD, Luo ZJ, Meng XZ.   +5 more
europepmc   +1 more source

黄土丘陵区典型层状结构土壤剖面CO₂分布特征及其影响因素

Shuitu Baochi Xuebao
目的为揭示层状土壤剖面的CO2垂直分布规律及其影响因素。方法选取典型层状结构土壤剖面为研究对象，基于土壤剖面构型特征，通过气井法对土壤剖面CO2浓度进行野外监测，并根据菲克定律计算CO2累积通量。结果1）层状结构主导CO2浓度的剖面分布格局。草地土壤中，CO2在剖面不同时期的旋回淤积层中浓度分别为2 449.2、6 201.9、2 736.9、5 284.9 μmol/mol，显示出波动趋势；农地土壤中，CO2在耕层、犁底层、底土层中浓度分别为1 792.3、3 661.4、5 294.7 μmol ...
夏彬, 张佐源, 郝旺林, 许明祥
doaj  

[Determination of trace polychlorinated biphenyls in environmental water samples by solid-phase microextraction-gas chromatography-tandem mass spectrometry using carbon nanotube composite microspheres materials]. [PDF]

Se Pu
Song XL, Zhu SQ, Wu YX, Zhong LY, Liu YQ.   +4 more
europepmc   +1 more source

[Determination of glufosinate, glyphosate and their metabolites in sediment by ultra-high performance liquid chromatography-tandem mass spectrometry with pass-through solid-phase extraction]. [PDF]

Se Pu
Yang X, Xie ZG, Li XL, Suo WW, Chen XY, Wan YW.   +5 more
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 51 per- and polyfluoroalkyl substances in raw water and drinking water by online solid-phase extraction coupled with ultra performance liquid chromatography- tandem mass spectrometry]. [PDF]

Se Pu
Chen YY, Lyu J, Ye BX, Zhang L, Wang YY, Jin N.   +5 more
europepmc   +1 more source

[Chemical diversity of dissolved organic matter revealed by ultra performance liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry]. [PDF]

Se Pu, 2023
Ma C, Ni HX, Qi YL.
europepmc   +1 more source

[Matrix solid-phase dispersion extraction of organophosphorus flame retardants in soil based on response surface methodology]. [PDF]

Se Pu
Wang J, Xu S, Sun Y, Lei H, Cheng Y, Wang X, Zhang Z.   +6 more
europepmc   +1 more source

[Rapid and simultaneous determination of glyphosate, glufosinate, and their metabolites in soil by high performance liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu, 2022
Ping H, Zhao F, Li C, Wang B, Kong H, Li Y, Ma Z.   +6 more
europepmc   +1 more source

[Determination of three new herbicide residues in soil, sediment and water by liquid chromatography-tandem mass spectrometry]. [PDF]

Se Pu
He HM, Xu LY, Zhang CP, Fang N, Jiang JH, Wang XY, Yu JZ, Zhao XP.   +7 more
europepmc   +1 more source