Pitting corrosion transformation of SUS304 stainless steel in lithium bromide solution at high temperature

Abstract

The foundational data and rules of SUS304 corrosion in aqueous lithium bromide solution at 150-200 8C have been investigated by means of weight loss in this paper. The Taguchi method was chosen to investigate the effects of variables on corrosion at higher temperature. Concentration of dissolved oxygen was controlled by keeping the vessel pressure at 1.3 kPa (absolute) before the experiment. The results showed that there was a transformation tendency from pitting corrosion to general corrosion and transition concentration of pitting and film corrosion decreased with increase in solution temperature. The adsorption, activity, and diffusivity of bromine ion led to different corrosion modalities.

Determination of Gentamicin Residual in Duck Meat Using Fluorescence Analysis Method

“…[2] , and it is easy to be remained in the food of poultry which can do harm to the health of the consumers.Therefore, many countries and regions have set the limit of the remainder of the Gentamicin, the European Union specified that the limit of Gentamicin residue was 50 µg/kg [3] . In China Pharmacopoeia, the determination method is the high performance liquid chromatography [4][5][6] , in addition, there are the microorganism method [7][8] , the spectrophotometry [9][10] , the fluorescence analysis [11][12] , the ELISA [13][14] , the colorimetric method [15][16] , the capillary electrophoresis method [17][18] and so on. At present, fluorescence analysis method for its high sensitivity, simple, reproducible and other advantages, has been widely used in the detection of the food, environment, medicine and other areas [19][20][21] .…”