FIELD: chemistry.
SUBSTANCE: invention relates to analytical chemistry, chemical engineering and ecology and can be used to detect trace amounts of cadmium in waste and natural water. In order to implement the method of extracting cadmium ions, a polystyrene-azo-rhodanine polymer chelating sorbent is added to the solution and the sorption process is carried out at room temperature and pH 7-9, and the solution is stirred for 20 minutes. The eluent used is 2M HCl solution.
EFFECT: method enables selective concentration of cadmium ions in a neutral medium in the presence of cobalt, nickel and vanadium ions by increasing sensitivity and high sorption capacity of the sorbent with respect to cadmium ions, where the detection limit is equal to 10-3 mg/l.
2 tbl, 1 ex
| 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 FOR GROUP EXTRACTION OF HEAVY METALS AND MODIFIED SORBENT THEREFOR | 2013 |
|
RU2546734C1 |
| METHOD FOR JOINTLY RECOVERING CU, FE, AND ZN FROM NATURAL AND DRINKING WATERS | 2001 |
|
RU2224032C2 |
| METHOD OF DETERMINING HEAVY METALS IN SOLUTIONS | 1999 |
|
RU2180959C2 |
| METHOD OF GROUP EXTRACTION OF NICKEL, COBALT, CADMIUM AND VANADIUM FROM SOLUTIONS | 0 |
|
SU1678872A1 |
| METHOD OF ZIRCONIUM EXTRACTION FROM MINERAL SUBSTANCE SOLUTIONS | 1991 |
|
RU2010877C1 |
| METHOD OF EXTRACTION OF MANGANESE, IRON, ZINC, COPPER, AND LEAD OUT OF NATURAL AND SEWAGE WATERS | 1990 |
|
RU2010770C1 |
| METHOD OF GROUP ELEMENT EXTRACTION FROM NATURAL WATERS AND SEWAGE | 0 |
|
SU1792923A1 |
| METHOD OF SORPTION-SPECTROSCOPIC DETERMINATION OF GOLD(III) | 2006 |
|
RU2319949C1 |
