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Influence of room temperature on magnesium isotope measurements by multi‐collector inductively coupled plasma mass spectrometry
Author(s) -
Zhang XingChao,
Zhang AnYu,
Zhang ZhaoFeng,
Huang Fang,
Yu HuiMin
Publication year - 2018
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.8122
Subject(s) - chemistry , inductively coupled plasma mass spectrometry , magnesium , inductively coupled plasma , mass spectrometry , isotope , analytical chemistry (journal) , plasma , chromatography , nuclear physics , physics , organic chemistry
Rationale We observed that the accuracy and precision of magnesium (Mg) isotope analyses could be affected if the room temperature oscillated during measurements. To achieve high‐quality Mg isotopic data, it is critical to evaluate how the unstable room temperature affects Mg isotope measurements by multi‐collector inductively coupled plasma mass spectrometry (MC‐ICP‐MS). Methods We measured the Mg isotopes for the reference material DSM‐3 using MC‐ICP‐MS under oscillating room temperatures in spring. For a comparison, we also measured the Mg isotopes under stable room temperatures, which were achieved by the installation of an improved temperature control system in the laboratory. Results The δ 26 Mg values measured under oscillating room temperatures have a larger deviation (δ 26 Mg from −0.09 to 0.08‰, with average δ 26 Mg = 0.00 ± 0.08‰) than those measured under a stable room temperature (δ 26 Mg from −0.03 to 0.03‰, with average δ 26 Mg = 0.00 ± 0.02‰) using the same MC‐ICP‐MS system. Conclusions The room temperature variation can influence the stability of MC‐ICP‐MS. Therefore, it is critical to keep the room temperature stable to acquire high‐precision and accurate isotopic data when using MC‐ICP‐MS, especially when using the sample‐standard bracketing (SSB) correction method.