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- W2389946696 abstract "A method for spectrophotometric determination of trace Cr(Ⅲ),Cr(Ⅵ) and ∑Cr in industrial waste water has been developed.In 0.1 mol/L HCI medium,the Cr(Ⅲ) and Cr(Ⅵ) are separated by CL TBP levextrel resin.The Cr(Ⅵ) absorbed on the resin is eluted by water. The trace Cr(Ⅵ) is determined with DPC spectrophotometry in 0.5 mol/L H 2SO 4 and H 3PO 4 mediums.In the buffer medium of pH5.5,the Cr(Ⅲ) and 5 Br PADAP Zeph form ternary complex,which is detemined with spectrophotometry.At heated condition,the trivalent chromium is oxidized by potassium permanganate and total chromium is determined by direct photometric method.The precision is better than±5%,and the recovery of Cr is 98%~104%." @default.
- W2389946696 created "2016-06-24" @default.
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- W2389946696 date "2001-01-01" @default.
- W2389946696 modified "2023-09-23" @default.
- W2389946696 title "SPECTROPHOTOMETRIC DETERMINATION OF TRACE Cr(III), Cr(VI) AND ∑Cr IN INDUSTRIAL WASTE WATER SEPARATED BY CL -TBP LEVEXTREL RESIN" @default.
- W2389946696 hasPublicationYear "2001" @default.
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