Human Urine Certified Reference Material for Arsenic Speciation
نویسندگان
چکیده
منابع مشابه
Human urine certified reference material for arsenic speciation.
BACKGROUND Chemical speciation analysis is essential for the biological monitoring of inorganic arsenic exposure using urine as indicator medium. There is increasing demand for a certified reference material (CRM) of urine matrix for arsenic speciation. METHODS Urine (10 L) was collected from non-occupationally exposed Japanese males. We prepared 954 bottles of urine, each containing approxim...
متن کاملIntercomparison of analytical methods for arsenic speciation in human urine.
An intercomparison exercise was conducted for the quantification of arsenic species in spiked human urine. The primary objective of the exercise was to determine the variance among laboratories in the analysis of arsenic species such as inorganic As (As+3 and As+5), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA). Laboratories that participated had previous experience with arsenic ...
متن کاملSelective arsenic speciation analysis of human urine reference materials using gradient elution ion-exchange HPLC-ICP-MS
Arsenic speciation analysis was performed in two human urine certified reference materials (NIES No. 18 and NIST SRM2670a) and three human urine control materials (Seronorm, Medisafe and Lyphocheck). The samples were diluted 1 1 3 prior to analysis by gradient elution anion or cation exchange high-performance liquid chromatography (HPLC) coupled with inductively coupled plasma mass spectrometry...
متن کاملCharacterization of a new certified reference material for human cardiac troponin I.
BACKGROUND To address the continuing need for the standardization of clinical human cardiac troponin I (cTnI) assays, NIST, with the assistance of the AACC/IFCC Cardiac Troponin I Standardization Committee, has developed a new certified reference material, Standard Reference Material (SRM) 2921: Human Cardiac Troponin Complex. METHODS The concentration of cTnI in SRM 2921 was determined throu...
متن کاملPurity Determination of Acetaldehyde in an Acetaldehyde Certified Reference Material.
Acetaldehyde is regulated as a toxic substance in various fields, and the method for monitoring or analysis of acetaldehyde is important. However, handling is difficult because of the high reactivity and low boiling point of acetaldehyde. Therefore, a reference material for high purity acetaldehyde with high accuracy was not available. Although the measuring method of acetaldehyde as a reagent ...
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ژورنال
عنوان ژورنال: Clinical Chemistry
سال: 2000
ISSN: 0009-9147,1530-8561
DOI: 10.1093/clinchem/46.11.1781