Determination of total arsenic concentrations in nails by inductively coupled plasma mass spectrometry

被引:85
作者
Chen, KLB
Amarasiriwardena, CJ
Christiani, DC [1 ]
机构
[1] Harvard Univ, Sch Publ Hlth, Dept Environm Hlth, Boston, MA 02115 USA
[2] Harvard Univ, Sch Med, Channing Lab, Boston, MA 02115 USA
[3] Brigham & Womens Hosp, Boston, MA 02115 USA
关键词
arsenic; nails; inductively coupled plasma-mass spectrometer (ICP-MS); washing efficiency; extraction efficiency;
D O I
10.1007/BF02784067
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The analysis of trace elements in biological samples will extend our understanding of the impact that environmental exposure to these elements has on human health. Measuring arsenic content in nails has proven useful in studies evaluating the chronic body burden of arsenic. In this study, we developed methodology with inductively coupled plasma-mass spectrometry (ICP-MS) for the determination of total arsenic in nails. We assessed the utility of the washing procedures for removing surface contamination. Four types of preanalysis treatments (water bath, sonication, water bath plus sonication, and control) after sample decomposition by nitric acid were compared to evaluate the digestion efficiencies. In addition, we studied the stability of the solution over 1 wk and the effect of acidity on the arsenic signal. Arsenic content in the digested solution was analyzed by using Ar-N-2 plasma with Te as the internal standard. The results suggest that washing once with 1% Triton X-100 for 20 min for cleaning nail samples prior to ICP-MS analysis is satisfactory. Repeated measurement analysis of variance revealed that there was no significant difference among the various sample preparation techniques. Moreover, the measurements were reproducible within 1 wk, and acidity seemed to have no substantial influence on the arsenic signal. A limit of detection (on the basis of three times the standard deviation of the blank measurement) of 7 ng As/g toenail was achieved with this system, and arsenic recoveries from reference materials (human hair and nails) were in good agreement (95-106% recovery) with the certified/reference values of the standard reference materials. ICP-MS offers high accuracy and precision, as well as high-throughput capacity in the analysis of total arsenic in nail samples.
引用
收藏
页码:109 / 125
页数:17
相关论文
共 28 条
[1]  
AGAHIAN B, 1990, AM IND HYG ASSOC J, V51, P646, DOI 10.1080/15298669091370293
[2]   Determination of the total arsenic concentration in human urine by inductively coupled plasma mass spectrometry: a comparison of the accuracy of three analytical methods [J].
Amarasiriwardena, CJ ;
Lupoli, N ;
Potula, V ;
Korrick, S ;
Hu, H .
ANALYST, 1998, 123 (03) :441-445
[3]  
BATE DLC, 1965, NUCLEONICS, V23, P72
[4]   ARSENIC INGESTION AND INTERNAL CANCERS - A REVIEW [J].
BATES, MN ;
SMITH, AH ;
HOPENHAYNRICH, C .
AMERICAN JOURNAL OF EPIDEMIOLOGY, 1992, 135 (05) :462-476
[5]   TRACE-ELEMENTS IN HUMAN FINGERNAILS - MEASUREMENT BY PROTON-INDUCED X-RAY-EMISSION [J].
BISWAS, SK ;
ABDULLAH, M ;
AKHTER, S ;
TARAFDAR, SA ;
KHALIQUZZAMAN, M ;
KHAN, AH .
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1984, 82 (01) :111-124
[6]   DETERMINATION OF TOTAL ARSENIC CONCENTRATIONS IN BIOLOGICAL MATRICES BY INDUCTIVELY-COUPLED PLASMA-MASS SPECTROMETRY [J].
CAMPBELL, MJ ;
DEMESMAY, C ;
OLLE, M .
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 1994, 9 (12) :1379-1384
[7]   CANCER POTENTIAL IN LIVER, LUNG, BLADDER AND KIDNEY DUE TO INGESTED INORGANIC ARSENIC IN DRINKING-WATER [J].
CHEN, CJ ;
CHEN, CW ;
WU, MM ;
KUO, TL .
BRITISH JOURNAL OF CANCER, 1992, 66 (05) :888-892
[8]  
CHEN CJ, 1985, CANCER RES, V45, P5895
[9]   ARSENIC IN GROUND-WATER IN 6 DISTRICTS OF WEST-BENGAL, INDIA - THE BIGGEST ARSENIC CALAMITY IN THE WORLD .2. ARSENIC CONCENTRATION IN DRINKING-WATER, HAIR, NAILS, URINE, SKIN-SCALE AND LIVER-TISSUE (BIOPSY) OF THE AFFECTED PEOPLE [J].
DAS, D ;
CHATTERJEE, A ;
MANDAL, BK ;
SAMANTA, G ;
CHAKRABORTI, D ;
CHANDA, B .
ANALYST, 1995, 120 (03) :917-924
[10]  
DHAWAN D, 1983, TOXICOL LETT, V15, P2