Pathogenic microorganisms and toxic elements in water are of concern to us, because they can directly harm our health. In this chapter, water quality online monitoring instrument manufacturers come to understand the pathogenic microorganisms and toxic elements in water with you.

Pathogenic microorganisms transmitted through drinking water include bacteria, viruses, protozoa and intestinal worms. The pathogenic bacteria are salmonella which infects typhoid, Shigella which infects bacillary dysentery, Vibrio cholerae which infects cholera and so on. Viruses include viruses that infect hepatitis and polio, as well as a variety of enteroviruses.

Main Toxic Elements in Water

Arsenic: carcinogen associated with skin cancer and blackfoot disease;

Cadmium: life nausea and vomiting, accumulation in the liver and kidney can not be discharged, carcinogens;

Chromium: produces nausea and ulcers after long-term drinking;

Copper: Higher than 1 mg/l will produce undesirable odor;

Cyanide: HCN, when the pH value is lower than 6, toxic gas is produced, and high concentration affects the nervous system;

Fluoride: Higher than 1.0 mg/l to prevent caries in children, slightly higher to yellow teeth when changing teeth. Higher than 4.0 mg/L will cause dental fluorosis in children during dental replacement. Higher than 15 mg/l may cause fluorosis;

Iron: Water turns yellow and cloudy. Taste, no effect on health;

Lead: accumulation in the middle bones, constipation, loss of appetite, anemia, abdominal pain, paralysis. Affecting children’s intelligence and development;

Manganese: has an undesirable odor;

Mercury: Highly toxic, gingivitis, tremors, chest pain, cough;

Nitrate: a suspected carcinogen that interacts with degenerated hemoglobin to produce diarrheal disease;

Selenium: suspected carcinogen, with similar symptoms to arsenic poisoning, associated with increased dental caries;

Silver: High levels affect hemoglobin, fatal. Low concentration skin darkening;

Sulfate: Produces diarrheal disease in high concentrations, without permanent effects.

Hangzhou Modi-Tech is a manufacturer of water quality online monitoring equipment, the main products: water heavy metal online analyzer, Escherichia coli online analyzer, biological toxicity online analyzer.