Rapid determination of boron isotopic composition (delta B-11) in pore water by multi-collector inductively coupled plasma mass spectrometry
Rapid determination of boron isotopic composition (delta B-11) in pore water by multi-collector inductively coupled plasma mass spectrometry
复制标题
多接收器电感耦合等离子体质谱法快速测定孔隙水中硼同位素组成（δ B-11）
DOI：
10.1039/c5ay00613a
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发表时间：
2016
影响因子：
3.1
通讯作者：
Wei Hai-Zhen
中科院分区：
文献类型：
--
作者：
Yang Tao;Bian Xiao-Peng;Zhu Bi;Jiang Shao-Yong;Yan Xiong;Wei Hai-Zhen
建立了一种适用于海水和孔隙水样品的MC-ICP-MS测定硼同位素（δ11B）的新方法。当应用纯标准溶液来涵盖未处理的孔隙水样品和含基质的标准品时，观察到明显的基质效应。采用基质匹配标准品对基质匹配标准品进行测定，消除了基质效应。硼的浓度效应也进行了研究，它表明，硼不显示出明显的浓度效应在50 μg L-1至300 μg L-1的浓度范围内。因此，以IAPSO（海水）为标准，直接测量未经处理的孔隙水，结果令人满意。该方法的突出优点是不需要硼的纯化过程，并且可以直接用于硼同位素分析而不明显牺牲精密度，从而使该协议比其他协议更快速。
A new method has been developed for the accurate, precise and more rapid determination of boron isotopes (δ11B) by MC-ICP-MS applicable to seawater and pore water samples. Obvious matrix effects have been observed when applying pure standard solutions to bracket the untreated pore water samples and matrix-containing standards. The matrix effects were eliminated by applying matrix-matched standards to measure the matrix-matched ones. The concentration effect of boron has also been investigated and it shows that boron does not exhibit an obvious concentration effect in the concentration range of 50 μg L−1 to 300 μg L−1. Therefore, IAPSO (seawater) was used as the standard to directly measure the untreated pore water and the results are satisfactory. The salient advantage of this method is that there is no need for boron purification procedures and water samples can be directly used for boron isotopic analysis without obvious sacrifice of precision, thus making this protocol more rapid than other ones.