Hach 59530-16, Instruction Manual

Page: 70 / 112

1—70
Zinc,
continued
Interferences
The following may interfere when present in concentrations exceeding those
listed:
Large amounts of organic material may interfere. Digest the sample to eliminate
this interference. Highly buffered samples or extreme sample pH may exceed the
buffering capacity of the reagents and require sample pretreatment.
Waste Management
ZincoVer 5 reagent contains potassium cyanide. Cyanide solutions are regulated as
hazardous wastes by the Federal RCRA. Cyanide should be collected for disposal as
a reactive (D003) waste. Be sure that cyanide solutions are stored in a caustic
solution with pH >11 to prevent release of hydrogen cyanide gas.
Aluminum 6 mg/L Iron (ferric) 7 mg/L
Cadmium 0.5 mg/L Manganese 5 mg/L
Copper 5 mg/L Nickel 5 mg/L