Tested metal

measurement field

measuring method

Key indicators

Lead ions/total lead

Lead pollution refers to the pollution caused by lead and its compounds in the environment. leadenThe main sources of pollution are smelting, batteries, hardware, machinery, coatings, and electricityWastewater discharged from plating and other processes. China has designated total lead as the subject of total quantity controlOne of the indicators. This product is widely used for monitoring environmental pollution sources（electricityPlating, metallurgy, printing and dyeing industries）Surface water monitoring·Municipal sewage

monitor

Lead interacts with porphyrin chromogens in specific wavesStrengths are used for spectrophotometric measurements.

Range:0-1-2-5mg/LOther ranges need to be customizedUncertainty:±3%

Copper ions/total copper

Copper is an important metal widely used in many fields, such as alloys, dyes, pipelines, and circuits. Copper salts can suppress floating in waterThe growth of organisms or algae in drinking water where the concentration of copper ions exceeds1mg/LIt will produce a bitter taste. Therefore, our country has defined copper ions as realOne of the indicators for implementing total quantity control.

Using the bicyclic ketone oxadiazole spectrophotometric method,Use citrate as a masking agent to mask the water sampleInterference from iron and cobalt ions, regulationpHValue in9 Add a color developer to the water sample and perform color comparison at a specific wavelength. Calculate based on absorbanceThe concentration of copper ions in water samples.

Range:0.05～10mg/L(Can be customized according to customer needs)

To expand)

Uncertainty:±2%

Nickel ions/total nickel

Nickel is a silver white, magnetic metal that is stable in air at room temperature,It is an inactive element. Nickel is prone to react with nitric acid and has a slower reaction with dilute hydrochloric acid or sulfuric acid. Nickel exists in various minerals in nature, oftenCombined with sulfur, arsenic, or antimony, mainly derived from chalcopyrite and nickel chalcopyriteWait. In mining, smelting, alloy production, metal processing, electroplating, and chemical industriesWastewater from industries such as ceramics and glass production may contain nickel.

Under slightly acidic conditions（Sulfuric acid medium), to pass throughAmmonium sulfate is used as an oxidant to remove divalent nickel from water samplesOxidation to tetravalent nickel, and then in a strongly alkaline medium

（pHThe value is approximately12）Tetravalent nickel and butanedione oximeform1:3The orange yellow soluble complex has an absorption peak at a specific wavelength, calculated based on absorbanceCalculate the concentration of nickel ions in the water sample.

Range:0.05～10mg/L(Can be customized according to customer needs)To expand)

Uncertainty:±2%

Arsenic ion/total arsenic

Arsenic（As）It is a non essential element for the human body, and arsenic has low toxicityAll compounds are highly toxic, with trivalent arsenic compounds being more toxic than five arsenic compounds, and organic arsenic being highly toxic to both humans and organisms. Therefore, our country

Total arsenic has been designated as one of the indicators for implementing total quantity control.

Arsenic reacts with thio chromogenic agents at specific wavelengthsPerform spectrophotometric measurement.

Range:0～2mg/L（Can be expanded according to customer needs

Exhibition)

Uncertainty:±2%

Hg ion/total mercury

Some substances in water can form complexes with mercury, which moves with the water; Suspended solids and sediment in water adsorb mercury, which is then transferred to sediments. Mercury in water can produceMaterial migration: With the participation of microorganisms, methylmercury (lipophilic) is formed and enters food

chain, HgThe harm to the human body is significant. Alloy production, semiconductor industry, energy-saving lamp production

Mercury may be present in production wastewater from enterprises and other industries.

HgInteracting with porphyrin chromogens at specific wavelengths

Perform spectrophotometric measurements at this location.

Range:0～5mg/L(Can be expanded according to customer needs)Exhibition)

Uncertainty:±2%