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A study has compared solid-phase extraction (SPE) to traditional normal-phase liquid column chromatography (LCC) methods for the analysis of hydrocarbons by gas chromatography–mass spectrometry (GC–MS ...

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我国食品安全检测行业的发展一直较为稳健。自2018年以来食品安全检测市场规模增长率稳定在20%出头，2021年全国食品安全监测市场规模达到216亿元。根据预测，2022年我国食品安全检测的增速也将保持在20%左右，市场规模有望达到262亿元。

GRPC peptides are found in the entire body. Isolation of seven classic GRPC peptides initiating in the GI tract could implicate disease.

The IR spectras of crude SPs extracts were also determined. The Fourier transform IR spectra (FT-IR) were recorded with a SHIMADZU IR spectrophotometer (model 8300) between 400 and 4000 cm-1. The ...