T/NMRJ 019-2024 Active Group standards

T/NMRJ 019-2024 The determination of cyanide in solid waste by flow injection spectrophotometric method using p-isonitrobenzene sulfonic acid and barbituric acid

Publish Date: 2024-12-30 Implement Date: 2024-12-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/NMRJ 019-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Environmental protection

ICS Name: Integrated waste management

Publish Date: 2024-12-30

Implement Date: 2024-12-30

Scope

Scope: This document specifies the flow injection azide-barbituric acid spectrophotometric method for the determination of cyanide in solid waste. This document is applicable to the determination of cyanide in solid waste. When the detection optical path is 10 mm, the detection limit of cyanide in solid waste by the flow injection azide-barbituric acid spectrophotometric method is 0.001 mg/L, and the determination limit is 0.004 mg/L; Main technical content: This method specifies the flow injection-spectrophotometric method for the determination of cyanide in solid waste. This standard is applicable to the determination of cyanide in solid waste. The main technical points of this method are the preparation method of the leaching solution of cyanide in solid waste. According to the "Leaching Toxicity Method for Solid Waste - Sulphuric Acid Nitric Acid Method (HJ/T 299)", the "Technical Specifications for the Identification of Hazardous Waste (HJ/T 298)" and the physicochemical properties of cyanide, the extraction medium and time conditions are determined; the working conditions of the flow injection instrument are specified.