DSHY7200-I Total sulfur analyzer by ultraviolet fluorescent

Foreword:

DSHY7200-I fluorescent UV sulfur analyzer a new generation precision test instrument developed according to chemiluminescence principle and computer technology. It is an advanced sulfur analyzer that be provided with features of wider linear range, stronger interference killing feature, simple operation, stable result etc., and widely applies to petroleum, chemical industry, electric power, coal, food, environmental protection and other zone. The instrument conforms to ASTM D5453, SH/T 0689 etc.

Basal principle

1. Operating principle:

After be introduced into high-temperature cracking furnace, sulfur in sample shall be

translated into sulfur dioxide (SO2) quantitatively via oxicracking, and reactive gas

shall be input into fluorescent chamber after dried and dehydrated. In fluorescent

chamber, partial sulfur dioxide shall translate into excited sulfur dioxide (SO2*) under

irradiation of ultraviolet light. SO2* shall send out photon after transited to ground

state. Photoelectron shall translate into electric signal that be in direct proportion to

luminous intensity after received by photo multiplier tube, magnified by magnifier

and processed by computer. The whole reaction process is denoted as below:

R-S+O2 SO2+SO3+CO2+H2O

SO2+h
SO2*+O2

SO2* SO2 +h
*

It is possible to detect total sulfur content of sample via measuring fluorescence

intensity because fluorescence intensity SO2*generated in reaction is in direct

proportion to generating amount of sulfur dioxide, and sulfur dioxide amount is in

direct proportion to total sulfur content of sample, under certain condition. Before

analyzing sample, please create calibration curve by using standard sample that

similar to sample, and then analyze sample under same condition. Program shall

calculate sulfur content of sample according to calibration curve of standard sample

automatically.

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