Determination of 22 metal elements in solid waste by inductively coupled plasma emission spectrometry (1)

(1) Scope of application

This method is suitable for the determination of silver (Ag), aluminum (A1), barium (Ba), beryllium (Be), calcium (Ca), cadmium (Cd), cobalt ( Co), chromium (Cr), copper (Cu), iron (Fe), potassium (K), magnesium (Mg), manganese (Mn), sodium (Na), nickel (Ni), lead (Pb), strontium ( The mass concentration of Sr, titanium (Ti), vanadium (V), zinc (Zn), thallium (T1), and antimony (Sb)

When the amount of solid waste sample is 0.

Table 5-23 The detection limit and lower limit of the method

(2) Method principle

After the solid waste and solid waste leachate are digested by acid, they are atomized in the atomizer of the plasma emission spectrometer, and carried by the argon carrier gas into the plasma torch.

(3) Reagents and materials

(1) Deionized water: first-grade pure water

(2) Sulfuric acid , nitric acid , hydrochloric acid , hydrofluoric acid , perchloric acid , hydrogen peroxide, etc.

(3) Mixed standard stock solution, 1000ug/mL: Purchase mixed standard solution with standard substance certificate

(4) Mixed standard use solution, 100ug/mL: Pipette 10.

Table 5-24 Grouping situation of multi-element mixed standard solution

(2) Microwave digestion instrument: with program temperature control function, the maximum power range is 600~1500W

(3) Temperature control electric heating plate: control accuracy ±2.

(4) Analytical balance: accuracy ±0.

(5) PTFE crucible: 100mL, 50mL

(6) Sieve: non-metallic sieve, 100 mesh

(7) Commonly used instruments and equipment in general laboratories

(8) All conical flasks, volumetric flasks, pipettes and other glassware used in the experiment were soaked in 10% dilute nitric acid overnight, rinsed with deionized water, and dried
.

Related Links: Identification of Leaching Toxicity by Inductively Coupled Plasma Atomic Emission Spectrometry (4)