Removal of spectral interferences and accuracy monitoring of trace cadmium in feeds by dynamic reaction cell inductively coupled plasma mass spectrometry
Removal of spectral interferences and accuracy monitoring of trace cadmium in feeds by dynamic reaction cell inductively coupled plasma mass spectrometry
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动态反应池电感耦合等离子体质谱法去除饲料中痕量镉的光谱干扰并准确监测
DOI：
10.1016/j.microc.2010.08.003
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发表时间：
2011-03
影响因子：
4.8
通讯作者：
Zhang, Hongfei
中科院分区：
文献类型：
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作者：
Guo, Wei;Hu, Shenghong;Zhao, Jian;Jin, Shesheng;Liu, Wenjuan;Zhang, Hongfei
In the direct ICP-MS determination of Cd in feed samples, significant spectral interferences caused by high concentrations of Mo can play an important role. In the present study, Mo based oxide or hydroxide polyatomic interferences were eliminated by dynamic reaction cell (DRC) with O2as reaction gas. Some other oxide or hydroxide interferences (i.e. Zr and Ru) were simultaneously reduced by this technology. These potentially interfering polyatomic ions95Mo16O+,94Mo16OH+,94Zr16OH+,98Mo16O+,98Ru16O+and97Mo16OH+on111Cd+and114Cd+were oxidized to higher oxides MoO2+, MoO3+, MoO4+, RuO3+, RuO4+, MoO2H+, MoO3H+, ZrO2H+and ZrO3H+. The rejection parameter q (RPq) of DRC and the flow rate of O2were optimized and set at 0.75 and 2.0mlmin−1, respectively. In addition, the residual isobaric interference of114Sn on114Cd was corrected using a mathematical correction equation. The limit of quantitation (LOQ) for111Cd or114Cd was 0.8 or 1.0ngg−1and the analysis results of NIST 1567a wheat flour and 1568a rice flour standard reference materials were in good agreement with the certified values. As the routine cadmium monitoring method in our laboratory, the proposed method was applied to the accuracy determination of 562 pig feed samples for the Monitoring of Central Meat Reserves (CMR) of China.
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影响因子：
4.8
作者：
S. D’Ilio;M. Alessandrelli;R. Cresti;G. Forte;S. Caroli
通讯作者：
S. D’Ilio;M. Alessandrelli;R. Cresti;G. Forte;S. Caroli
影响因子：
2
作者：
R. Dmochowski
通讯作者：
R. Dmochowski
DOI：
10.1016/j.respe.2020.09.004
发表时间：
2020-10-10
期刊：
Revue D'Epidemiologie et De Sante Publique
影响因子：
--
作者：
La rédaction
通讯作者：
La rédaction
影响因子：
9.3
作者：
通讯作者：
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