ANALISIS LC50 LOGAM PB, CO DAN CR TERHADAP IKAN MAS (CYPRINUS CARPIO. L) PADA LIMBAH CAIR INDUSTRI PERCETAKAN KOTA PADANG

Ihsan, Taufiq and Edwin, Tivany (2017) ANALISIS LC50 LOGAM PB, CO DAN CR TERHADAP IKAN MAS (CYPRINUS CARPIO. L) PADA LIMBAH CAIR INDUSTRI PERCETAKAN KOTA PADANG. Dampak, 14 (2). pp. 98-103. ISSN 2597-5129

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Abstract

The purpose of this study is to determine the LC50 value of wastewater from printing industry in Padang and to analyze the effect of Pb, Co, and Cr contained in the wastewater towards LC50 value. The results of the analysis of the characteristics of the printing industry wastewater, Pb concentration of 0.3 mg/l, Cr 0.8 mg/l and Co 0.9 mg/l. These concentrations exceed the quality standards in Indonesia according to PermenLH No. 05 of 2014 on Wastewater Quality Standard. Acute toxicity test was conducted in 96 hours observation using common carp (Cyprinus carpio.L) as animal testing with two replications. The value of LC50 was calculated using Probit Method by processing the data of testing animal mortality. The average value of LC50 was 128.05%. It can be proven from this study that Pb, Co and Cr affected the LC50 value indicated that a higher LC50 is related to a Pb, Co and Cr higher concentrations in wastewater and vice versa.

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