节点文献
离子色谱(IC)和电感耦合等离子体质谱(ICP-QQQ-MS)联用同时测定海洋沉积物中Cr(Ⅲ)和Cr(Ⅵ)
SIMULTANEOUS DETERMINATION OF CR(Ⅲ)AND CR(Ⅲ)IN MARINE SEDIMENTS BY ION CHROMATOGRAPHY(IC)AND INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY(ICP-QQQ-MS)
【Author】 Li Sha;Cui He;Yin Xiuzhen;Feng Lijuan;Li Xianguo;Ocean University of China;Technology Center of Qingdao Customs;Qingdao University of Science and Technology;
【机构】 中国海洋大学; 青岛海关技术中心; 青岛科技大学;
【摘要】 本文建立了离子色谱(IC)和电感耦合等离子体质谱(ICP-QQQ-MS)联用同时测定海洋沉积物中Cr(Ⅲ)和Cr(Ⅵ)的方法。样品经震荡提取,以60mmol/L NH4NO3(pH=7.5)和5mmol/L EDTA(2Na)为流动相,在IonPacAS19(4×250 mm)色谱柱上分离后测定。在ICP-QQQ-MS三重极杆碰撞池中引入30%O2反应气,相同的方法可以用于不同的样品,简化了对于不同样品的前处理。结果表明:Cr(Ⅲ)和Cr(Ⅵ)在0~100μg/L内有良好的线性关系,相关系数(R2)>0.9998,检出限分别为0.2μg/L(0.01 mg/kg)和0.05μg/L(0.0025 mg/kg)。加标回收率为85~120%。可以同时测定海洋沉积物中Cr(Ⅲ)和Cr(Ⅵ)。
【Abstract】 A method for simultaneous determination of Cr(Ⅲ)and Cr(Ⅵ)in marine sediments was established by combining ion chromatography (IC) and inductively coupled plasma mass spectrometry (ICP-QQQ-MS).The sample is extracted by shaking,using 60mmol/L NH4NO3(pH=7.5)and 5mmol/L EDTA(2Na)as mobile phases,it was determined after separation on an IonPacAS19(4×250 mm) chromatographic column.Introducing 30%O2 reagent gas into the ICP-QQQ-MS dual pole collision cell,the same method can be used for different samples,which simplifies the pretreatment of different samples.The results show that Cr(Ⅲ)and Cr(Ⅵ)have a good linear relationship in the range of 0-100μg/L,the correlation coefficient(R2)is greater than 0.9998,and the detection limits are 0.2μg/L(0.01 mg/kg) and 0.05μg/L(0.0025 mg/kg).The standard recovery rate is between 85 and 120%.The method can simultaneously determine Cr(Ⅲ)and Cr(Ⅵ)in marine sediments.
【Key words】 marine sediments; Chromium (Ⅲ); Chromium(Ⅵ); Ion chromatography and Inductively Coupled Plasma Mass Spectrometry;
- 【会议录名称】 中国环境科学学会2021年科学技术年会——环境工程技术创新与应用分会场论文集(三)
- 【会议名称】中国环境科学学会2021年科学技术年会——环境工程技术创新与应用分会场
- 【会议时间】2021-10-20
- 【会议地点】中国天津
- 【分类号】X834;O657.63
- 【主办单位】中国环境科学学会环境工程分会