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The purpose of this study was to establish an analytical
methods of hexavalent chromium, total chromium, lead, cadmium,
copper, nickel and manganese in the wastewater discharged from
leather production . The tannery manufactory is located on the
industrial park of Ping -Tong City Country and with wastewater
treatment facilities.These wastewater samples are treated,
respectively, and the analytical techniques were as follow : The
Cr (VI) concentration determined by 1,5-Diphenylcarbazide (DPC)
Colorimetry and discussion about the amount of DPC addition
affects absorption signal. The total chromium, lead, cadmium,
copper, nickel and manganese were determined by graphite furnace
atomic absorption sprctrophotometry, and discussion about that
effects of ashing, atomization temperatures and gas flow on
absorbance signal. The validation oThe results showed that the
function of wastewater treatment facilities of this tannery can
reduce concentrations of metals in wastewater obviously, and in
effluent waters besides cadmium metal , the quantity contained
of other metals are conformed to the effluent standards . But,
in order to avoid causing environment pollution, this tannery
shall improve further.
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