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Surface water monitoring project and analysis method
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Key words: surface water testing project; US analytical instrument ; UV-1100; UV-1800A
Table 1-3-1 Surface Water Monitoring Project Projects to be tested include river water temperature, pH, suspended solids, total hardness, electrical conductivity, dissolved oxygen, permanganate index, five-day biochemical oxygen demand, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, volatile phenol, Cyanide, fluoride, sulfate, chloride, hexavalent chromium, total mercury, total arsenic, cadmium, lead, copper, coliform sulfide, salinity, nonionic ammonia, Kjeldahl nitrogen, total phosphorus, chemistry Water temperature, pH of drinking water source such as oxygen demand, dissolved iron, total manganese, total zinc, selenium, petroleum, anionic surfactant, organochlorine pesticide, benzo (α) hydrazine, benzene, total organic carbon, etc. , suspended solids, total hardness, electrical conductivity, dissolved oxygen, permanganate index, five-day biochemical oxygen demand, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, volatile phenol, cyanide, fluoride, sulfate, chlorine Compound, hexavalent chromium, total mercury, total arsenic, cadmium, lead, copper, coliform, total bacterial count iron, manganese, copper, zinc, selenium, silver, turbidity, chemical oxygen demand, anionic surfactant, six Liuliu, DDT, benzo (α) 芘, total alpha radioactivity, total beta radioactivity, etc. Water temperature, pH, suspended solids, total hardness, transparency, total phosphorus, total nitrogen, dissolved oxygen, permanganate index, five-day biochemical oxygen demand, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, volatile phenol, cyanide , fluoride, hexavalent chromium, total mercury, total arsenic, cadmium, lead, copper, chlorophyll a potassium, sodium, zinc, sulfate, chloride, conductivity, total dissolved solids, aggressive carbon dioxide, free carbon dioxide, total Alkalinity, carbonate, bicarbonate, coliform, etc.
Table 1-3-2 Analysis methods of surface water monitoring projects No. Parameter measurement method Detection range (mg/L) Annotation analysis method source 1 Water temperature water temperature meter measurement method -6～+40 0 C GB13195—91 2 PH value glass electrode method 0～14 GB6920—86 3 Sulfate barium sulfate gravimetric method 10 or more results are based on SO 4 2 -GB5750-85 sodium chromate spectrophotometry 5 to 200 sodium turbidity turbidimetry 1 to 40 4 chloride silver nitrate volumetric method 10 or more results in C1 - GB5750-85 mercury nitrate volumetric method Measured to 10 or less 5 Total iron phenanthroline spectrophotometric detection lower limit 0.05 Determination of dissolved state, colloidal state, suspended particles and total iron in the body of water GB5750-85 Atomic absorption spectrophotometric detection limit 0.3 6 Total manganese potassium periodate spectrophotometric detection lower limit 0.02 GB11906—89 Atomic absorption spectrophotometric detection lower limit 0.01 GB11911—89 7 Total copper atomic absorption spectrophotometry direct method 0.05～5 Unfiltered sample is digested and determined Total copper content in dissolved and suspended state GB7475—87 Chelating extraction method 0.001～0.05 GB7474—87 Sodium diethyldithiocarbamate (copper reagent) spectrophotometric detection lower limit 0.003 (3cm cuvette) 0.02～0.70 ( 1cm cuvette) GB 7473-87 2.9-Dimethyl-1,10-diazaphenanthrene (new copper reagent) spectrophotometry 0.006~3 8 total zinc dithizone spectrophotometry 0.005~0.05 water sample after digestion treatment Total zinc content GB7472—87 Atomic absorption spectrophotometry 0.05～1 GB7475—87 9 Nitrate phenol disulfonic acid spectrophotometry 0.02～1 When the nitrate content is too high, it should be diluted and determined. The results were analyzed by nitrogen (N) GB7480-87 10 nitrite spectrophotometry 0.003 ~ 0.20 after sampling. The results are based on nitrogen (N) GB7493 - 87 11 non-ionic ammonia Ness reagent spectrophotometry 0.05 ~ 2 (spectrophotometry) 0.20 ~ 2 (visual method) measured results are nitrogen (N) in terms of ammonia nitrogen concentration, Then according to the GB 3838-88 schedule, converted to non-ionic ammonia concentration GB7479-87 salicylic acid spectrophotometric method 0.01 ~ 1 GB7481 - 87 12 Kjeldahl-selenium catalytic mineralization method detection limit 0.5 (1cm cuvette) After sample treatment, the value of ammonia nitrogen and organic nitrogen was measured by Ness spectrophotometry. The result was nitrogen (N) GB11891-89 13 total ammonium phosphomolybdate spectrophotometry 0.01~0.6 unfiltered water sample was digested Post-measured dissolved and suspended total phosphorus (in P) GB11893-89 14 Permanganate index acidic potassium permanganate method 0.5 ~ 4.5 When the chloride ion concentration is greater than 300mg / L, use alkaline potassium permanganate Method GB11892-89 Alkaline potassium permanganate method 0.5～4.5 15 Dissolved oxygen iodide method 0.2～20 Iodine method for determination of dissolved oxygen has various correction methods. The determination should be based on the interference situation. GB7489—87 16 Chemical oxygen demand Weighted chromate method 30～700 GB11914—89 17 Biochemical oxygen demand dilution and inoculation method 2 Diaminobenzidine spectrophotometric detection lower limit 0.01 GB5750-85 Fluorescence spectrophotometric detection lower limit 0.001 20 Total arsenic diethyldithiocarbamate silver spectrophotometry 0.007~0.5 Measured as monomer form, inorganic or organic matter Total amount of elemental arsenic GB7485—87 21 Total mercury cold atomic absorption spectrophotometry Potassium permanganate-potassium persulfate disinfection method detection limit 0.0001 (optimal condition 0.00005) Including inorganic or organic combination, soluble and suspended Total mercury GB7468-87 Potassium bromate-potassium bromide disinfection method 22 Total cadmium atomic absorption spectrophotometry (chelating and extraction method) 0.001～0.05 After acid digestion, the total cadmium content in the water sample is measured GB7475-87 disulfide腙 Spectrophotometry 0.001～0.05 GB7471—87 23 Chromium (hexavalent) Diphenylcarbazide spectrophotometry 0.004～1.0 GB7467—87 24 Total lead atomic absorption spectrophotometry direct method 0.2～10 After acid digestion treatment , measured total lead in water samples GB7475-87 chelation extraction method 0.01 ~ 0.2 dithizone spectrophotometric method 0.01 ~ 0.30 GB7470-87 25 total cyanide isonicotinic acid - pyrazolone spectrophotometric method 0.004 ~ 0.25 Includes all simple cyanide and most complex cyanide, excluding cobalt cyanide complex GB7486-87 pyridinium-barbituric acid spectrophotometry 0.002～0.45 26 volatile phenol distillation-aminoantipyrine spectrophotometry Method (chloroform extraction method) 0.002～6 GB7486—87 27 Petroleum method ultraviolet spectrophotometry 0.05～50 SL93.2—94 28 Anionic surface
Active agent methylene blue spectrophotometry 0.05 ~ 2.0 This method is measured as active substance (MBAS), the result is LAS calculus GB7494 - 87 29 total coliform multi-tube fermentation method GB5750-85 filter membrane method 30 benzo [α]芘 paper chromatography - fluorescence spectrophotometry 2.5μg / L GB5750-85
Key words: surface water testing project; US analytical instrument ; UV-1100; UV-1800A High Voltage Power Cables
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