WebDec 1, 2012 · Considering that the standard dichromate method COD Cr (GB 11914-89, 1990) is mainly used for oxygen demand of organic pollutants >30 mg/L, while the permanganate index (PI, GB11892-89, ... WebNon-Billable On/After Oct 1/2015. ICD-9-CM V82.89 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, V82.89 should only be …

(PDF) Construction and Application of a Water Quality

http://www.zgtghccl.com/403433570.html WebLB-4200高锰酸盐指数全自动分析仪 检测项目： 高锰酸盐指数、耗氧量（ CODMn法） 高锰酸盐指数，又称耗氧量，也称化学需氧量 (锰法)，以CODMn表示。 它指以高锰酸钾为氧化剂，在一定条件下氧化水中还原性物质，将消耗高锰酸钾的量折算为氧表示(O2，mg/L)。 byu students accident

高锰酸盐指数测定方法（GB11892-89酸性法）的探讨 Semantic …

WebJan 1, 2011 · COD was measured by determination of permanganate index (GB11892-89, PR China). A water sample of 100 mL was boiled at 100 °C for 30 min after vitriol oil and potassium permanganate was added, then sodium oxalate was added before titration by potassium permanganate. Ammonia and nitrate were measured by analyzer by HACH … WebJan 1, 2011 · Titration method was used to determine CODMn ( GB11892-89 ). The levels of NH 3–N, TN and TP in the samples were measured using UV spectrophotometer (Shimadzu UV mini-1240, Japan). For TN analysis, samples were boiled in a mixture of potassium persulphate and 1:1 sulfuric acid, and absorbances at 220 nm and 275 nm were … http://www.qdwb2b.com/sell/show.php?itemid=2082280 byu student portal