| 纳米TiO2分离富集ICP-MS法测定河口环境样品中重金属研究 |
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| 引用本文： | 黄霄红,卢豪良.纳米TiO2分离富集ICP-MS法测定河口环境样品中重金属研究[J].亚热带资源与环境学报,2013(2):35-40. |
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| 作者姓名： | 黄霄红 卢豪良 |
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| 作者单位： | [1]厦门大学医学院,福建厦门361102 [2]厦门大学环境与生态学院,福建厦门361102 |
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| 基金项目： | 国家自然科学基金（3100244） |
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| 摘 要： | 建立了以纳米二氧化钛（TiO2）作为吸附剂填充微柱，电感耦合等离子体质谱（ICP-MS）法测试Cu^2＋，Cd^2＋，Pb^2＋和Ni^2＋离子的分析方法．考察了不同pH值、洗脱液浓度、样品流速、体积和外源干扰离子的影响，实验结果表明在pH值8～10范围内待测离子可被TiO2定量吸附，2．0molL^-1HNO3可将吸附在微柱上的待测物完全洗脱，优化条件下本方法对溶液中Cu^2＋，Cd^2＋，Ph^2＋和M^2＋离子检出限分别为：0．02，0．01，0．01，0．02μgL～，相对标准偏差小于2％（n=7），富集系数50倍．对水系沉积物标准物质（GBW07310）的测定值与标准值相一致，方法具有简便、快速，灵敏度高，重现性好的优点，可满足河口水体与沉积物样品中痕量金属元素定量分析的要求．
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| 关 键 词： | 纳米二氧化钛 电感耦合等离子体-质谱 固相萃取 重金属 |
Heavy Metal Determination in Estuary Environmental Samples： Using Nanometer TiO2 as Sorbent and Based on Inductively Coupled Plasma Mass Spectrometer |
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| HUANG Xiao-Hong,LU Hao-Liang.Heavy Metal Determination in Estuary Environmental Samples： Using Nanometer TiO2 as Sorbent and Based on Inductively Coupled Plasma Mass Spectrometer[J].Journal of Subtropical Resources and Environment,2013(2):35-40. |
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| Authors: | HUANG Xiao-Hong LU Hao-Liang |
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| Institution: | 1. Medical College, Xiamen University, Xiamen 361102, Fujian, 2. College of Environment and Ecology, Xiamen University, Xiamen 361102, China Fujian, China) |
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| Abstract: | A new micro-column packed with nanometer TiO2 as sorbent has been developed for quanti- tative separation, preeoncentration and determination of Cd （ Ⅱ ）, Cu （ Ⅱ ）, Pb （ Ⅱ ） and Ni （ Ⅱ ） ions in sediment and seawater samples by inductively coupled plasma mass spectrometer （ICP-MS）. Effects of pH, concentration and volume of elution solution, and the flowing rate, volume and interfer-ing ions of the samples on recovery of the ions were investigated. Detection limit （3σ） for Cu^2＋, Cd^2＋, Pb^2＋ and Ni^2＋ was 0.02, 0.01, 0.01 and 0.02 μg L-1, respectively. A preconcentration factor, 50, and low relative standard deviation, ≤2% （n = 7） values were obtained. Further, the method was verified by analyzing certified reference materials （GBW 07310） and spiked seawater samples, showing its effectiveness in the determination of heavy metal ions in estuary environment. |
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| Keywords: | nanometer titanium oxide inductively coupled plasma mass spectrometry solid phaseextraction heavy metal |
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