Pengaruh Waktu Penyimpanan Sampel Air Sungai Deli terhadap Kadar Kromium Heksavalen (Cr6+)

Abstract

Rate metal of Chromium hexavalent (Cr6+) inwater of Deli river determined with the spectrophotometer portable DR/2010. Where its wavelength is 540 nm. The result have obtained in first day analyse is 0,02 mg/l and second day (have passed the depository time/pickling sample) is 0,01 mg/l. the result ofanalysis have done, known that the duration depository of sample have effect to rate of Chromium hexavalent (Cr6+).