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Evaluation of Total, Water-soluble and Hexavalent Chromium Contents in Construction Materials(Concretes, Cements)
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  • Evaluation of Total, Water-soluble and Hexavalent Chromium Contents in Construction Materials(Concretes, Cements)
저자명
Choi. In-Ja,Yoon. Chung-Sik,Choi. Sang-Jun
간행물명
韓國環境保健學會誌
권/호정보
2007년|33권 6호|pp.497-501 (5 pages)
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한국환경보건학회
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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The objective of the study is to determine the contents of total chromium, water-soluble chromium and hexavalent chromium in cements and concretes specimens taken from manufacturing or construction sites. Chromate is an allergen that is widespread in the environment and is richly contained in cements. Metals were extracted with microwave oven and analyzed by atomic absorption spectrometer. Hexavalent chromium was analysed by ion chromatography. The concentrations of total chromium, water-soluble chromium and hexavalent chromium in cements were $36.02{sim}108.01,;15.95{sim}89.01;and;26.77{sim}89.61;mg/kg$, respectively. The concentrations of hexavalent chromium in cements were higher than 2 mg/kg, a maximum value recommended in Northern European Countries. The concentrations of total chromium, water-soluble chromium and hexavalent chromium in concretes were $17.44{sim}76.25,;0.98{sim}17.71;and;ND{sim}24.13;mg/kg$, respectively. Especially Hexavalent chromium was detected only from concrete specimens from construction sites. It is oxidized or reduced status by environmental condition or surrounding materials.