Training materials for tap water quality analysis-Xiamen Yimai Environmental Protection Technology Co., Ltd

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Xiamen Yimai Environmental Protection Technology Co., Ltd

E-mail
xmyimai@163.com
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Room 1401, No. 198, Building 7, Jiaxin Garden, Dongfu New City, Haicang District, Xiamen City

Training materials for tap water quality analysis

Date: 2013-03-26Read: 0

Collection and preservation methods of water samples for different monitoring projects

project	Sampling container	保存方法	shelf life	sample size^① （ml）
Color, smell, taste	G.	4℃保存	24h	250
PH	G.P.	4℃保存	On site measurement or measurement within 6 hours	250
turbidity	G.P.	4℃保存		100
Total Hardness	G.P.	HNO_3,pH≤2		150
Iron and manganese	G.P.	HNO_3,pH≤2		200
Total Bacterial Count	G.		Within 4 hours	300
Total coliform microbiota	G.		Within 4 hours	50
residual chlorine	G.		On site measurement	50

ammonia nitrogen	G.P.	H₂SO_4,pH≤2	24h	50
NO₂^-－N	G.P.	Store in the dark at 0-4 ℃;	24h	50
NO₃^-－N	G.P.	Store in the dark at 0-4 ℃;	24h	50
oxygen consumption	G.	Add 0.8ml concentrated sulfuric acid per liter of water sample and store at 4 ℃	24h	150
chloride	G.P			100
Total alkalinity	G.		Within 4 hours	100
microorganism	G	Add sodium thiosulfate to a concentration of 0.2-0.5g/L to remove residual chlorine, and store at 4 ℃	12h	250
biology	G.P.	When on-site measurement is not possible, fix with formaldehyde and store at 4 ℃	12h	250

remark：（1）； G is a hard glass bottle; P is a polyethylene bottle (barrel);

(2) ① The minimum sampling amount for a single sample;