Study on reference material of coal for γ-ray on-line analyzer;

At present, on-line analyzer of distillation range normally use theory of RTP distillation that only can analyze a point or discontinuity of distillation range.

Coal mercury emission characteristics under air and oxy-fuel environment were investigated by the combination of tube resistance heating furnace and the coal combustion mercury continuous emission monitor(Hg CEM).

The check and accept process for industrial waste COD on-line analyzer should guarantee to the identity test condition such as in the same place and stratification sampling,in same container sampling for both tests,with the same precipitation elimination method to remove chloride ion to make the result .

Based on the operation and management experience of on-line COD_(Cr) analyzer,several suggestions are put forward,including replacing ferrous ammonium sulfate by potassium hydrogen phthalate as range-measured solution,replacing zero offset by beginning offset,and inspecting the compatibility of analyzer to water quality when the potassium dichromate method is not used.