Online cadmium analyzerNational standard method:

Atomic absorption spectrophotometry (GB/T7475-87)

Dithiazone spectrophotometric method (GB/T7471-87)

Anodic stripping voltammetry

Oscillographic method

Online cadmium analyzerAnalysis method: The sample is acidified and added to a hexamethylenetetramine buffer solution, followed by the addition of a color developer. After the reaction is carried out, the absorbance changes before and after the color reaction are calculated at a specific wavelength to obtain the cadmium ion concentration in the liquid.

Analyte: Cadmium ion (Cd) concentration.

Measurement range: 0-1mg/L.(expandable to)

Cadmium

Cadmium is highly toxic and can accumulate in tissues such as the liver and kidneys of the human body, causing damage to various organs and tissues, especially to the kidneys. It can also lead to osteoporosis and softening.

The vast majority of freshwater has a cadmium content of less than 1 μ g/L, while the average concentration of cadmium in seawater is 0.15 μ g/L. The main sources of cadmium pollution are wastewater discharged from electroplating, mining, smelting, dyeing, batteries, and chemical industries.

The methods for determining cadmium include atomic absorption spectrophotometry (GB/T7475-87), dithizone spectrophotometry (GB/T7471-87), anodic stripping voltammetry, and oscillopolarography.

Oscillographic method is suitable for determining cadmium, copper, lead, zinc, and nickel in industrial wastewater and domestic sewage. For drinking water, groundwater, and clean surface water, they need to be measured after enrichment. The detection limit of the method can reach 10-6mol/L.

When measuring, industrial wastewater or domestic sewage samples are first pretreated, and then cadmium, copper, zinc, and nickel are measured in ammonia supported electrolytes according to the instrument operation method; Determination of lead in hydrochloric acid supported electrolyte. Quantify using standard curve method or standard addition method. Regarding the measurement conditions.

Determination of Cadmium, Copper, Zinc, Nickel, and Lead by Oscillographic Polarography.

Successfully passed a series of tests for installation and setup. During installation, simply connect the medication, sample, waste liquid pipeline, and power cord, and set the parameters to start. Automatic calibration, automatic cleaning, automatic testing, and automatic data saving. Long term self-control, low maintenance, low operating costs, fully automatic operation, low chemical consumption, short preparation time, simple maintenance, no need for special electrician training.