Refinement of Methodology for Cadmium Determination in Soil Micro-Arthropod Tissues
Zhu Dong1,2; Ke Xin3; Wu Longhua1; Huang Yujuan1; Peter Christie1; Luo Yongming4
2017-06-01
发表期刊PEDOSPHERE
ISSN1002-0160
卷号27期号:3页码:491-501
摘要Highly precise and reliable determination of heavy metals in soil micro-arthropod tissues remains a challenge because of the small size of the animals and their typical low abundance in metal-contaminated agricultural soils. The present study sought to develop a method for cadmium (Cd) determination in soil micro-arthropods by optimizing the sample digestion procedure, reducing sample weight, modifying sample pre-treatment and validating the methodology with field samples. The optimized digestion conditions comprised a sample mass of 50-150 mu g, digestion reagent of nitric acid:hydrogen peroxide (3:1), digestion temperature of 105 degrees C, digestion period of 3 h and digestion volume of 30 mu L. Defecation of the standatd Collembola Folsomia candida (92 h) and the indigenous Collembola Onychiurus yodai (42 h) and ultrasonic cleaning of F. candida increased the accuracy of Cd determination. The recovery of Cd using the refined procedure was 98.9% and the limits of detection and quantification were 0.002 and 0.008 mu g L-1, respectively. The within-batch precision values were < 3%. The Cd concentrations in the tissues of the Collembola Isotoma sp. collected from a range of metal-contaminated fields determined by the improved method were consistent with the Cd concentrations in the field soils. The results indicate that the optimized method can be used for more accurate or reliable determination of Cd concentrations in soil micro-arthropod tissues.
关键词Digestion Defecation Folsomia Candida Micro-samples Predatory Mite Sample Pre-treatment Ultrasonic Cleaning
DOI10.1016/S1002-0160(17)60345-X
项目资助者National High Technology Research and Development Program of China(2012AA101402-2) ; National Natural Science Foundation of China(41271264 ; 41325003)
收录类别SCI
关键词[WOS]ORTHOGONAL ARRAY DESIGN ; ATOMIC-ABSORPTION SPECTROPHOTOMETRY ; ULTRASONIC ACID DIGESTION ; FOLSOMIA-CANDIDA ; BIOLOGICAL SAMPLES ; HEAVY-METALS ; MICROWAVE DIGESTION ; NATURAL SOILS ; COLLEMBOLA ; INVERTEBRATES
文章类型Article
语种英语
WOS研究方向Agriculture
WOS记录号WOS:000405059600010
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/22553
专题中科院海岸带环境过程与生态修复重点实验室
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Biol Sci, Inst Plant Physiol & Ecol, Shanghai 200032, Peoples R China
4.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc, Yantai 264003, Peoples R China
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Zhu Dong,Ke Xin,Wu Longhua,et al. Refinement of Methodology for Cadmium Determination in Soil Micro-Arthropod Tissues[J]. PEDOSPHERE,2017,27(3):491-501.
APA Zhu Dong,Ke Xin,Wu Longhua,Huang Yujuan,Peter Christie,&Luo Yongming.(2017).Refinement of Methodology for Cadmium Determination in Soil Micro-Arthropod Tissues.PEDOSPHERE,27(3),491-501.
MLA Zhu Dong,et al."Refinement of Methodology for Cadmium Determination in Soil Micro-Arthropod Tissues".PEDOSPHERE 27.3(2017):491-501.
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