汞元素高灵敏、低成本检测新方法的研究
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摘要
本研究应用4200型微波等离子体原子发射光谱仪(MP-AES)分别采用单通道进样模式和多通道—氢化物发生法进样模式测定有害重金属元素汞,系统地研究了介质的种类、介质的酸度以及硼氢化钾的用量对汞元素测定的影响。分析结果表明各条件下的线性相关系数均≥0. 999,多模式进样氢化物发生法的方法检出限范围为0. 00581～0. 0508 mg/L,优于单通道直接进样模式的方法检出限0. 494～1. 444 mg/L,各条件下的线性范围宽度均可达到二个数量级以上,空白加标回收率在93%～120%之间。本方法准确快速、成本低、安全性高、具有较好的检出限和较宽的线性范围,是测定Hg、As等众多元素的一种新选择。
This study used 4200 microwave plasma atomic emission spectrometer( MP-AES) respectively adopts the model of single channel sampling and multi-channel hydride generationsampling to determine the harmful heavy metal element-mercury,systematically studied the kinds of medium,medium acidity and the amount of potassium borohydride on measurement of mercury. The results show that the linear correlationcoefficient of each condition was more than 0. 999,the method detection limit of multi-channel hydride sampling was 0. 00581 mg/L-0. 0508 mg/Lwhichis better than the single channel sampling(0. 494 mg/L-1. 444 mg/L),the linear range of width under different conditions can be achieved more than two orders of magnitude,blank recoveries in the 93%-120%. This method which is accurate,rapid,low cost,high safety,good detection limit and wide linear range is a new choice for the determination of Hg,As and many other elements.
This study used 4200 microwave plasma atomic emission spectrometer( MP-AES) respectively adopts the model of single channel sampling and multi-channel hydride generationsampling to determine the harmful heavy metal element-mercury,systematically studied the kinds of medium,medium acidity and the amount of potassium borohydride on measurement of mercury. The results show that the linear correlationcoefficient of each condition was more than 0. 999,the method detection limit of multi-channel hydride sampling was 0. 00581 mg/L-0. 0508 mg/Lwhichis better than the single channel sampling(0. 494 mg/L-1. 444 mg/L),the linear range of width under different conditions can be achieved more than two orders of magnitude,blank recoveries in the 93%-120%. This method which is accurate,rapid,low cost,high safety,good detection limit and wide linear range is a new choice for the determination of Hg,As and many other elements.
引文
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[5] M R Hammer. A magnetically excited microwaveplasma source for atomic emission spectroscopy with performance approaching that of the inductively coupledplasma[J].Spectrochimica Acta,2008,63B:456-464.
[6] Renato C F Neves,Paula M Moraes,Mayra A D Saleh,et al. FAAS determination of metal nutrients in fish feed after ultrasound extraction[J]. Food Chemistry,2009,113:679-683.
[7]贺秀媛,李小波,张志平,等.原子吸收分光光度法测定饲料原料铅、铜、锌、锰2种前处理方法的比较[J].扬州大学学报:农业与生命科学版,2009,30(4):43-47.
[8]谢艳招,黄艺燕,赵林. AAS法测定水中重金属含量[J].江西化工,2013(3):58-60.
[9]艾明.氢化物发生-原子吸收光谱法测定食品中的汞[J].中国无机分析化学,2013,3(1):74-76.
[10] Lidzey,Raymond G. Separation of heavy metals from aqueous media,US,5441648[P]. 1995-08-15.
[11]孙腊梅.中国环境科学学会学术年会优秀论文集[C]//氢化物发生原子荧光光谱法测金属硒的验证与应用研究.北京:中国环境科学出版社,2007,1671-1675.
[12]兰岚,陈丽丽,刘师,等.氢化物发生法MP-AES法测定印刷品中的可迁移元素[J].广州化工,2014,42(19):93-96,132.
[13]刘师,兰岚. MP-AES氢化物发生法测定印刷品中可迁移元素[J].科学与技术,2015(3):90-91.
[14]武汉大学.分析化学:下册[M]. 5版.北京:高等教育出版社,2007:45-48.
[15]鲁静,付凌燕,王旭.质量分析方法验证中检出限和定量限测定方法探讨[J].中国药品标准,2012,13(1):33-35.
[2]陈荣.纺织品中重金属残留的生态环保问题(2)[J].上海染料,2000,28(6):1-5.
[3]纪雷,孙健,王岩,等.欧盟与国产纺织品可萃取重金属含量测定及特征分析[J].光谱实验室,2004,21(3):488-491.
[4]吴春华,欧阳昆,陈玉红,等.采用微波等离子体原子发射光谱(MP-AES)新技术同时测定环境水样中的多种金属元素[J].环境化学,2011,30(11):1967-1969.
[5] M R Hammer. A magnetically excited microwaveplasma source for atomic emission spectroscopy with performance approaching that of the inductively coupledplasma[J].Spectrochimica Acta,2008,63B:456-464.
[6] Renato C F Neves,Paula M Moraes,Mayra A D Saleh,et al. FAAS determination of metal nutrients in fish feed after ultrasound extraction[J]. Food Chemistry,2009,113:679-683.
[7]贺秀媛,李小波,张志平,等.原子吸收分光光度法测定饲料原料铅、铜、锌、锰2种前处理方法的比较[J].扬州大学学报:农业与生命科学版,2009,30(4):43-47.
[8]谢艳招,黄艺燕,赵林. AAS法测定水中重金属含量[J].江西化工,2013(3):58-60.
[9]艾明.氢化物发生-原子吸收光谱法测定食品中的汞[J].中国无机分析化学,2013,3(1):74-76.
[10] Lidzey,Raymond G. Separation of heavy metals from aqueous media,US,5441648[P]. 1995-08-15.
[11]孙腊梅.中国环境科学学会学术年会优秀论文集[C]//氢化物发生原子荧光光谱法测金属硒的验证与应用研究.北京:中国环境科学出版社,2007,1671-1675.
[12]兰岚,陈丽丽,刘师,等.氢化物发生法MP-AES法测定印刷品中的可迁移元素[J].广州化工,2014,42(19):93-96,132.
[13]刘师,兰岚. MP-AES氢化物发生法测定印刷品中可迁移元素[J].科学与技术,2015(3):90-91.
[14]武汉大学.分析化学:下册[M]. 5版.北京:高等教育出版社,2007:45-48.
[15]鲁静,付凌燕,王旭.质量分析方法验证中检出限和定量限测定方法探讨[J].中国药品标准,2012,13(1):33-35.