发明名称 |
Method and apparatus for automated determining of chemical oxygen demand of a liquid sample |
摘要 |
A method and apparatus for automated determining of the chemical oxygen demand of a liquid sample, comprising steps as follows: mixing the liquid sample with sulfuric acid; introducing a carrier gas, especially air, into the liquid sample-sulfuric acid mixture; adding an oxidizing agent to the liquid sample-sulfuric acid mixture to form a reaction mixture; heating (especially under reflux conditions) the reaction mixture at the boiling temperature of the reaction mixture for a predetermined time period; photometrically determining consumption of an oxidizing agent in the reaction mixture; and ascertaining therefrom the chemical oxygen demand of the liquid sample, wherein all steps are automatedly performed in an analytical system with the assistance of an evaluating and control unit. |
申请公布号 |
US8236567(B2) |
申请公布日期 |
2012.08.07 |
申请号 |
US20100805305 |
申请日期 |
2010.07.23 |
申请人 |
KATHE ULRICH;KLEY KRISTOFF;SCHIPOLOWSKI THOMAS;HOPPE LYDIA;ENDRESS + HAUSER CONDUCTA GESELLSHAFT FUR MESS-UND REGELTECHNIK MBH + CO. KG |
发明人 |
KATHE ULRICH;KLEY KRISTOFF;SCHIPOLOWSKI THOMAS;HOPPE LYDIA |
分类号 |
G01N33/18;G01N31/00;G01N33/00 |
主分类号 |
G01N33/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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