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Certification of Cr(VI) and total leachable Cr contents in welding dust loaded on a filter (CRM 545)
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Speciation measurements by HPLC-HGAAS of dimethylarsinic acid and arsenobetaine in three candidate lyophilized urine reference materials
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Cr(III) and Cr(VI) speciation measurements in environmental reference materials
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Sample collection guidelines for trace elements in blood and urine
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SAMPLE COLLECTION GUIDELINES FOR TRACE-ELEMENTS IN BLOOD AND URINE