API PUBL 4750-2008

$29.90

Cyanide Discharges in the Petroleum Industry: Sources and Analysis

Published By	Publication Date	Number of Pages
API	2008	58

Guaranteed Safe Checkout

Category: API

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

When water quality criteria for cyanide are incorporated in NPDES permits, the resulting water quality-based effluent limits may be very low (e.g., 5-20 µg/L). This is especially true when a discharge is to a surface water body with very little allowable effluent dilution (i.e., a limited mixing zone). Because both industrial and municipal dischargers have been issued NPDES permits with these low effluent limits, there has been considerable interest in the reliability of the available test methods at these low concentrations. This report provides guidance on the measurement, as well as the presence and environmental fate, of cyanide compounds and related chemical species in petroleum industry wastewater effluents. The report provides technical information to assist NPDES permittees in negotiating site-specific water quality-based effluent limits for cyanide. The report also provides permittees with guidance on the sampling and analytical methods that must be used to assure that cyanide data are as reliable as practical, given the limitations of the analytical methods. Addressed within the report are analytical methods frequently specified for measuring total cyanide and simple cyanides, including available cyanide, weak acid dissociable cyanide, and free cyanide. All of the analytical methods for cyanide are subject to matrix interferences when wastewater and surface water samples are analyzed, and method performance testing is recommended for cyanide concentrations below 30-50 µg/L.

Additional information