The authoritative public forum
  for Metal Finishing since 1989
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Impact of electroplating effluent on fish

Dear sir

I want the following particulars.
nickel and chromium concentration in electroplating industry.
nickel toxicity range for freshwater fish, O.mossambicus
chromium toxicity range for freshwater fish, O.mossambicus
electroplating effluent toxicity range for fish.

Perumalsamy Navaraj
yadava college, madurai - Madurai, Tamilnadu, India
2004

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Discharging untreated electroplating solutions is totally irresponsible and unbelievably stupid. In my opinion, anyone doing this should be made to clean the mess up themselves and pay for it. They should then be removed from free society. Both nickel and chromium are toxic heavy metals and will certainly kill all fish and anything else that comes into intimate contact with the effluent. LD50 values for these metals are known and are available on the internet and from health and safety books.

Trevor Crichton
R&D practical scientist
Chesham, Bucks, UK
2004