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Development of anion-exchange high-performance liquid chromatography-inductively coupled plasma mass spectrometry methods for the speciation analysis of inorganic selenium and iodine in groundwater
Nie, Z; Zheng LN(郑令娜); 丰伟悦; Zheng, LN; Feng, WY; Liu, CL
2014
发表期刊ANALYTICAL METHODS
卷号6期号:20页码:8380-8387
摘要This work presents the first report of a method for simultaneous speciation of inorganic selenium and iodine using high-performance liquid chromatography coupled with inductively coupled plasma mass spectrometry (HPLC-ICP-MS). Baseline separation of selenite, selenate, iodide and iodate within a single chromatographic run of 10 min was achieved with the optimized mobile phase of 3 mM ammonium citrate, 25 mM ammonium perchlorate and 2% (v/v) methanol at pH 8.5. The mass spectrometric operating conditions were optimized to detect selenium and iodine simultaneously. Potential matrix effects were addressed and corrected using the standard addition method, and the recoveries (95.7-103%) were satisfactory. The repeatability and intermediate precision were satisfactory (the coefficients of variation were all less than 5% and 8%, respectively). The obtained detection limits were 22 ng L-1 and 23 ng L-1 for selenite and selenate, respectively, and 4.3 ng L-1 and 5.4 ng L-1 for iodide and iodate, respectively, which allows for the speciation of selenium and iodine in groundwater at the ultra-trace level. Groundwater samples collected from a candidate site for the Chinese high-level radioactive waste repository were analyzed. Within the three different groundwater samples, selenate was observed to be the dominant Se species; in addition, the iodide concentration increased and the iodate concentration decreased with increasing sampling depth. With its satisfactory sensitivity and accuracy, this method provides a promising tool for studying the environmental behaviors of selenium and iodine, thereby supporting safety assessments of high-level radioactive waste repositories.
学科领域Chemistry; Food Science & Technology; Spectroscopy
DOI10.1039/c4ay01186d
收录类别SCI
WOS记录号WOS:000342989400040
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/224812
专题多学科研究中心
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GB/T 7714
Nie, Z,Zheng LN,丰伟悦; Zheng, LN,et al. Development of anion-exchange high-performance liquid chromatography-inductively coupled plasma mass spectrometry methods for the speciation analysis of inorganic selenium and iodine in groundwater[J]. ANALYTICAL METHODS,2014,6(20):8380-8387.
APA Nie, Z,郑令娜,丰伟悦; Zheng, LN,Feng, WY,&Liu, CL.(2014).Development of anion-exchange high-performance liquid chromatography-inductively coupled plasma mass spectrometry methods for the speciation analysis of inorganic selenium and iodine in groundwater.ANALYTICAL METHODS,6(20),8380-8387.
MLA Nie, Z,et al."Development of anion-exchange high-performance liquid chromatography-inductively coupled plasma mass spectrometry methods for the speciation analysis of inorganic selenium and iodine in groundwater".ANALYTICAL METHODS 6.20(2014):8380-8387.
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