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GC-MS is used in this method, easily accepted by researchers.\n                  <\/jats:p>","DOI":"10.1039\/d1ay00456e","type":"journal-article","created":{"date-parts":[[2021,6,21]],"date-time":"2021-06-21T06:51:26Z","timestamp":1624258286000},"page":"4814-4820","update-policy":"https:\/\/doi.org\/10.1039\/rsc_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["A simple new method for the determination of ammonium isotopes by gas chromatography-mass spectrometry"],"prefix":"10.1039","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4811-3146","authenticated-orcid":false,"given":"Wei","family":"Guo","sequence":"first","affiliation":[{"name":"Pearl River Conservancy Commission, Pearl River Institute of Hydraulic Research, Guangzhou, 510610, China"},{"name":"Key Laboratory of the Pearl River Estuarine Dynamics & Associated Process, Ministry of Water Resources, Guangzhou, 510610, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ran","family":"Jiang","sequence":"additional","affiliation":[{"name":"Pearl River Conservancy Commission, Pearl River Institute of Hydraulic Research, Guangzhou, 510610, China"},{"name":"Key Laboratory of the Pearl River Estuarine Dynamics & Associated Process, Ministry of Water Resources, Guangzhou, 510610, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhang","family":"Xinfeng","sequence":"additional","affiliation":[{"name":"Pearl River Conservancy Commission, Pearl River Institute of Hydraulic Research, Guangzhou, 510610, China"},{"name":"Key Laboratory of the Pearl River Estuarine Dynamics & Associated Process, Ministry of Water Resources, Guangzhou, 510610, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jun","family":"Li","sequence":"additional","affiliation":[{"name":"Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, State Key Laboratory of Organic Geochemistry, Guangzhou, 510640, People\u2019s Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"292","published-online":{"date-parts":[[2021]]},"reference":[{"key":"D1AY00456E\/cit1","doi-asserted-by":"crossref","first-page":"3787","DOI":"10.1021\/ac403756u","volume":"86","author":"Liu","year":"2014","journal-title":"Anal. 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