T/CGA 013-2017 Active Group standards

T/CGA 013-2017 Gold industry cyanide chemical analysis methods Determination of cyanide by volumetric and spectrophotometric methods

Publish Date: 2019-02-01 Implement Date: 2019-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Price: $ 20.00

Out of stock

Basic Information

Standard Code: T/CGA 013-2017

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: \nMining industry

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2019-02-01

Implement Date: 2019-02-01

Scope

Main technical content: This standard specifies the method for determining cyanide in cyanide slag and the leachate prepared according to HJ/T 299. This standard is applicable to the determination of cyanide content in cyanide slag and the leachate prepared according to HJ/T 299. This standard is divided into two parts: Part I - Sample preparation; Part II - Sample analysis methods. Method 1: Silver nitrate titration; Method 2: Isonicotinic acid-pyrazolone spectrophotometry; Method 3: Isonicotinic acid-barbituric acid spectrophotometry. For the determination of cyanide slag, when the sample weight is 1.50 g: a) The detection limit of silver nitrate titration is 8.67 mg/kg, and the determination limit is 34.7 mg/kg; b) The detection limit of isonicotinic acid-pyrazolone spectrophotometry is 0.350 mg/kg, and the determination limit is 1.40 mg/kg, with a determination upper limit of 167 mg/kg; c) The detection limit of isonicotinic acid-barbituric acid spectrophotometry is 0.310 mg/kg, and the determination limit is 1.24 mg/kg, with a determination upper limit of 167 mg/kg. For the determination of cyanide leachate, when the sampling volume is 200 mL: a) The detection limit of silver nitrate titration is 0.065 mg/L, and the determination limit is 0.260 mg/L; b) The detection limit of isonicotinic acid-pyrazolone spectrophotometry is 0.003 mg/L, and the determination limit is 0.012 mg/L. When 2 mL is used for determination during color development, the determination upper limit is 1.25 mg/L; c) The detection limit of isonicotinic acid-barbituric acid spectrophotometry is 0.003 mg/L, and the determination limit is 0.012 mg/L. When 2 mL is used for determination during color development, the determination upper limit is 1.25 mg/L.