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Determination of Free Inorganic Cadmium Ions in Marine Bivalves by High Performance Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry

文献类型： 外文期刊

作者： Zhao Yan-Fang 1 ; Ning Jin-Song 1 ; Shang De-Rong 1 ; Zhai Yu-Xiu 1 ; Ding Hai-Yan 1 ; Sheng Xiao-Feng 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fishery Res Inst, Qingdao 266071, Peoples R China

关键词： High performance liquid chromatography; Inductively coupled plasma mass spectrometry; Marine bivalves; Cadmium ion

期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.134； 五年影响因子：0.909 ）

ISSN： 0253-3820

年卷期： 2016 年 44 卷 8 期

页码：

收录情况： SCI

摘要： A new method was established to determine the free inorganic cadmium ion (Cd2+) in marine bivalves using high performance liquid chromatography and inductively coupled plasma mass spectrometry (HPLC-ICP-MS). The free Cd2+ in shellfish was ultrasonic extracted for 40 min by 10 mmol/L Tris buffer solution (with 0.1 mol/L NaCl, pH=7. 5), and the separation of Cd2+ was achieved using an IonPac CS5 A analytical column with an IonPac CG5A guard column. The mobile phase consisted of 50 mmol/L C2H2O4 and 95 mmol/L LiOH. The new method had a good linear relationship with the correlation coefficient of 0.999 and the standard recoveries of Cd2+ were all above 84.6%. The free Cd2+ content in several kinds of marine bivalves was determined using the method and the results showed that the percentage of free inorganic Cd2+ to the total Cd content in samples with high Cd content was higher than those with low Cd content.

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