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product name
Oxygen Test, titrimetric, for use with MQUANT® titration pipette
分析物化學類別
oxygenates
品質等級
相容性
for use with MQUANT® titration pipette
檢測方法
titrimetric
儲存溫度
15-25°C
一般說明
Method: titrimetric, acc. to Winkler, with titration pipette MQuant®
The sustainability of biological processes in natural waters is essentially depended on a sufficient oxygen content. The oxygen present in water is also consumed by chemical processes and by microorganisms. This MQuant® Oxygen test (formally MColortest®) is suitable for the titrimetric determination using a graduated syringe.
It can be used in:
Method
In alkaline solution, dissolved oxygen oxidizes manganese(II) ions to form manganese(IV) hydroxides (“oxygen fixation”). In strongly acidic solution these yield manganese(III) ions, which in turn oxidize iodide ions to form iodine. This is then titrated with sodium thiosulfate solution against starch as the indicator until the solution becomes entirely colorless. The oxygen concentration is determined from the consumption of titration solution (iodometric determination acc. to Winkler). The oxygen consumption is calculated as the difference between the oxygen content measured immediately after sampling and that measured after n days (n = 2 to 5).
It can be used in:
- Groundwater, drinking water, and surface water, seawater
- Aquarium water, waters from aquaculture
- Industrial water and wastewater
- Boiler water and boiler feed water
- Beverages
Method
In alkaline solution, dissolved oxygen oxidizes manganese(II) ions to form manganese(IV) hydroxides (“oxygen fixation”). In strongly acidic solution these yield manganese(III) ions, which in turn oxidize iodide ions to form iodine. This is then titrated with sodium thiosulfate solution against starch as the indicator until the solution becomes entirely colorless. The oxygen concentration is determined from the consumption of titration solution (iodometric determination acc. to Winkler). The oxygen consumption is calculated as the difference between the oxygen content measured immediately after sampling and that measured after n days (n = 2 to 5).
法律資訊
MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany
MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany
訊號詞
Danger
危險分類
Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A - STOT RE 2 - STOT RE 2 Oral
標靶器官
Brain, Thyroid
儲存類別代碼
8B - Non-combustible, corrosive hazardous materials
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
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