Online water quality analyzer, online heavy metal analyzer

Analysis method: Classical spectrophotometry

♦ Scope: ug/L、mg/L、g/L

♦ Detection limit: ≤ 0.1 µ g/L (depending on application)

♦ Accuracy:<5-10% of full scale, suitable for standard test solutions

♦ Measurement cycle: 1 cycle/10-30 minutes

♦ Flow path selection: 1 or more flow paths

Measuring water quality: drinking water, boiler supply water, treated wastewater, cooling water, process water, and surface water

1. Soil, groundwater, and sediment samples for measuring heavy metal content (arsenic, cadmium, cobalt, chromium, copper, mercury, manganese, nickel, lead, antimony, vanadium, zinc)

2. Measure the content of elements (silver, aluminum, arsenic, barium, beryllium, cadmium, cobalt, chromium, copper, iron, lithium, manganese, molybdenum, nickel, lead, selenium, tin, strontium, titanium, vanadium, zinc) in natural and wastewater samples

3. Drinking water testing includes general testing items such as Escherichia coli, total bacterial count, color, odor, total hardness, turbidity, etc; At the same time, it can also be used for drinking water testing of volatile organic compounds (10 items such as benzene, p-dichlorobenzene, etc.), organochlorine pesticides (Lingdan, Ansafan, etc.), and organophosphorus pesticides (Yipinsong, Dalisong, Balazon, Yasulin, etc.)

4. Determination of the Content of Arsenic, Cadmium, Chromium, Lead, Tribute, and Tin in Food

The toxicity of metals and their deposition in geochemical processes are closely related to their morphology (including valence state, chemical state, binding state, and structural state): for example, free copper is more toxic than inert organic complex copper, Cu2+, Cu (OH) 2, Cu2 (OH) 22+copper is toxic to fish, while CuHCO3+, CuCO3, Cu (CO3) 22- are non-toxic; Methylmercury is more toxic than ionic mercury, while elemental arsenic has extremely low toxicity, and arsenic compounds are all toxic; Trivalent arsenides have the greatest toxicity, with high oxidation states of chromium in oxygen rich water, forming soluble chromates and possessing high migration and diffusion abilities.

Metal ions in solution often require determination of their specific ionic form, whether they are "free" ions or in a complex state, or adsorbed on specific substances, as it determines the impact of metal ions on plant and animal life in water, as well as their migration, transformation, and retention in water. For example, metals can affect the growth of algae, which can act as promoters of algae growth because certain metals are essential nutrients for plants, and can also inhibit the growth of algae because some metals are toxic to organisms. In both cases, metals must be naturally and effectively absorbed by plants through their surface energy. The most direct form in which metals can be utilized is in the form of metal ions present in a solution. If metals are combined with complexing agents and cannot be directly metabolized by plants, they cannot be easily and effectively absorbed, thereby affecting plant growth. Similarly, if metals combine with particulate matter in water or form colloidal precipitates such as iron hydroxide, there will be no equivalent effect of the same amount of metal present as free ions.

Sometimes, when searching for pollution sources, it is also necessary to rely on the analysis of pollutant forms. For example, morphological analysis can determine whether metals in soil and water sediment are naturally occurring or caused by human pollution. Generally, metals emitted from industrial cities often exist in ion exchange and carbonate bound states on particulate matter, while naturally occurring heavy metals often exist in crystalline form.