气候变化领域集成服务门户(CCPortal): Developing an analytical method for free amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry

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DOI	10.1016/j.atmosres.2021.105579
	Developing an analytical method for free amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry
	Gao, Shaopeng; Xu, Baiqing; Zheng, Xiaoyan; Wan, Xin; Zhang, Xiaolong; Wu, Guangming; Cong, Zhiyuan
通讯作者	Cong, ZY (通讯作者)
发表日期	2021
ISSN	0169-8095
EISSN	1873-2895
卷号	256
英文摘要	Amino acids in rain samples offer important information on their origin and roles in biogeochemical cycling. This paper describes the development and validation of an alternative analytical procedure for amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry (GC?MS). The method detection limits (MDLs) of these amino acids ranged from 1.46 ng L-1 (Proline) to 135 ng L-1 (Arginine), which were much lower than previous methods like high-performance liquid chromatography (HPLC) and comparable to those with liquid chromatography-tandem mass spectrometry (LC-MS/MS). None of the target analytes were detected in blank samples, which was attributed to the optimized pretreatment protocol we adopted. We conclude that the GC?MS based technique developed in this study possesses advantage due to low detection limits. We further demonstrate the applicability of this method by analyzing rain samples from the background atmosphere of the Tibetan Plateau (TP). Similar relative abundances of amino acids were found in the TP rains, marine rains and Arctic ice. The correlations between FAAs and water- soluble ions in the Tibetan Plateau rainwaters showed that the FAAs were most likely originated from biomass burning. Given the similarity of snow and rain samples, our method also provides potential for the future analysis of amino acids in glacier ice cores.
关键词	AEROSOLS ICE SNOW HPLC LEVOGLUCOSAN DERIVATIVES MATTER
英文关键词	Amino acids; GC?MS; Precipitation; Tibetan Plateau
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000643527900001
来源期刊	ATMOSPHERIC RESEARCH
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260190
推荐引用方式 GB/T 7714	Gao, Shaopeng,Xu, Baiqing,Zheng, Xiaoyan,et al. Developing an analytical method for free amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry[J]. 中国科学院青藏高原研究所,2021,256.
APA	Gao, Shaopeng.,Xu, Baiqing.,Zheng, Xiaoyan.,Wan, Xin.,Zhang, Xiaolong.,...&Cong, Zhiyuan.(2021).Developing an analytical method for free amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry.ATMOSPHERIC RESEARCH,256.
MLA	Gao, Shaopeng,et al."Developing an analytical method for free amino acids in atmospheric precipitation using gas chromatography coupled with mass spectrometry".ATMOSPHERIC RESEARCH 256(2021).