P Palanisamy, G Sasikala, D Mallikaraj, N Bhuvaneshwari, GM Natarajan
In India, chromium is widely used in all electroplating industries. Chromium present in electroplating industrial effluents has been shown to inhibit many enzymes in different segments of metabolism. Chromium particularly inhibits pyruvate oxidase system and phosphatases. The present study was undertaken to evaluate the effect of chromium present in effluents on phosphatases when exposed to sublethal concentration (0.25%) for a period of 24, 48, 72 h and 15 d. The activity levels of acid phosphatase and alkaline phosphatase were significantly decreased in gill and swim bladder tissues of experimental catfish, Mystus cavasius, as compared to controls.