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The water quality of 13% of 980 state-controlled sections exceeded V class of ten water areas such as the Yangze River and the Yellow River in China in 2011. C is one of the main pollution indicators in those water bodies. Therefore, it is important to accurately monitor the C in water bodies. Aiming at the shortcoming of the traditional methods, instruments and equipment (sample digestion and determination), digestion reagents, and determination methods have been optimized and improved. On this basis, the detection techniques which are higher detection efficiency and accuracy, and environment friendly have also been developed and applied. The traditional detection method is suit for exterminating C with the content range of 3~900 mg/L in the light and moderate polluted water bodies. The improved and optimized methods extend the detect limits from 5 mg/L to 1200 mg/L, and they may shorten the detection time significantly, and reduce the costs, but cannot avoid the environmental pollution by the chemical reagents, and have insufficient oxidation ability to the refractory organics. B, D or a combination of several techniques, which have already been used as the mature detection methods in the fields such as drugs and immune analysis, mineral and rock analysis, have also been employed for the determination of C in water bodies. They provide lower detect limit (0.34 mg/L), further shorten the detection time, and dramatically reduce the pollution of the reagents. With the development of the science and technology, some new methods such as O, E, have been developed recently. They have wider detection range from 0 mg/L to 32100 mg/L, and are suit for the determination of C of different pollution levels in water bodies. The new techniques can give a reference for the accurate, rapid monitoring determination of C.

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?????from ?????????to??and???????c??????????and by using these methods, detection time was shortened significantly, cost of detection was decreased, however, the environmental pollution caused by chemical reagents could not be avoided, and oxidation ability to the refractory organics was not sufficient.
?????]??N???}?????^?????X?¨°????f??????
???????????lower detect limit (0.34 mg/L) could be achieved, detection time was shortened again, and the pollution of the reagents was reduced dramatically. ?????????}??the pollution of the reagents????????????????????????????????_????????????????????????????????????????of???to??????????????reagents pollution??
?????science????the??????@?N????]?????????????gthe?????the??o????N???X??????fscience of XXXX???Y???]?§µ????????rthe???????N??
??????????????B??????? They???who????which??detection range???????fromXXXtoXXX??????^???????@?¦Â??????????0 mg/L - 32100 mg/L????¨¢? and are suit for the determination of C of different pollution levels in water bodies. ?@???????and who are capable of determining the concentration of C in water bodies with different pollution level.
???????can give??????could provid??reference ???basis??for???????????Y???????????to the determination of C with more accuracy in a shortened duration.
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3Â¥2013-07-27 20:01:30
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andrewzhang

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