FIELD: chemistry.
SUBSTANCE: invention relates to analytical chemistry, chemical engineering and environmental science. Disclosed is a method for group extraction of copper, zinc and cadmium, which includes sorption concentration of metals on amberlite IRA-400, modified with 2,7-bis-azo-derivative of chromotropic acid. The amberlite is modified with 3-[(4-antipyrine)azo]-6-[(2-carboxyphenyl)azo]chromotropic acid. After concentration, metals are desorbed with a 0.05 solution of a disodium salt of ethylendiaminetetraacetic acid at pH 10 and ratio of the volume of the solution to the mass of the sorbent of 5000:1.
EFFECT: invention enables to obtain analytical concentrations in tests for metals in field conditions.
1 dwg, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF EXTRACTION OF CADMIUM AND ZINC FROM NATURAL AND WASTEWATER | 2016 |
|
RU2622204C1 |
| METHOD OF CONCENTRATING AND DETECTING COPPER, LEAD AND CADMIUM | 2008 |
|
RU2361660C1 |
| METHOD OF EXTRACTING CADMIUM FROM WASTE AND NATURAL WATER | 2009 |
|
RU2417952C1 |
| COMPLEXING SORBENT AND METHOD OF PREPARING SAID SORBENT | 2008 |
|
RU2380152C1 |
| METHOD OF DETERMINING HEAVY METALS IN SOLUTIONS | 1999 |
|
RU2180959C2 |
| ZINC-SELECTIVE ELECTRODE MEMBRANE | 2012 |
|
RU2488813C1 |
| EXTRACTION-VOLTAMMETRY METHOD OF DETERMINING ZINC, CADMIUM, LEAD, COPPER AND IRON IN SOLID SAMPLES OF NATURAL OBJECTS | 2008 |
|
RU2382355C1 |
| PURIFICATION OF WASTE WATER FROM HEAVY METALS | 2011 |
|
RU2480420C1 |
| METHOD OF IRON DETERMINATION IN THE AQUEOUS SOLUTION | 0 |
|
SU1709195A1 |
| METHOD OF GROUP CONCENTRATION FROM ACID SOLUTIONS AND SEPARATION OF IONS OF ELEMENTS BY IONIC LIQUID | 2015 |
|
RU2637236C2 |
