Although manganese is a trace element necessary for normal metabolism of the human body, excessive manganese can cause chronic poisoning of the central nervous system and inhibit the activity of certain enzymes. Therefore, the manganese in the wine is the inspection item specified in the national food hygiene standard. In the current national standard test method, 567, the wine sample still needs to be treated before digestion. So far, the determination of manganese in wine has only been reported by flame atomic absorption spectrometry. The determination of manganese in wine by graphite furnace atomic absorption spectrometry has not been reported. In this paper, the content of manganese in wine was determined by platform graphite furnace atomic absorption spectrometry. The matrix interference, background absorption and recovery rate were tested. Materials and Methods The manganese standard solution of materials and instruments contains excellent grades. Atomic absorption spectrophotometer, graphite furnace, workstation, micropipette type, platform graphite tube. Graphite furnace working condition wavelength hollow cathode lamp current K8L, signal processing is peak height, integration time O2, injection volume graphite furnace heating program see table test method injection volume is 8! First, the absorbance of the standard solution having the manganese content was determined, and then the wine sample was sequentially diluted with a solution to dilute the wine sample to a linear range of the standard curve C, and each solution was measured in parallel three times. The standard addition method and the recovery rate test are also treated in the same manner. Results and discussion The measurement results of the standard curve method are shown in Table 8. The linear regression equation is TQKJJJU, the linear range is C when the injection amount, and the characteristic mass is = 6. The measurement result of the wine sample is shown in the table standard curve method. Compared with the standard addition method, the graphite furnace heating process step temperature rise time retention time remarks dry ashing atomization gas removal platform graphite furnace atomic absorption spectrometry direct determination of manganese interference and background absorption in wine, the wine sample does not have to be pretreated , can be directly measured by the standard curve method, the linear range is! ! 'Features (!) when the feature. The liquors, yellow wine and wine were analyzed and determined, and the relative standard deviation was 00/1! The 2/3 recovery rate is 42/1/, and the measurement result is accurate and reliable. Zhejiang Shuren University School of Light Industry and Environmental Protection, Hangzhou Shen Tu Chao Wang Fangquan analysis. Analysis and testing of food industry science and technology on the first page Gu Xin Liu Jingshun new natural food preservative chitosan, Chinese herbal medicine compound preparation research and application Zhengzhou Grain College Journal Zhang Weihong several Chinese herbal medicine mixed preparations antibacterial effect of experimental observation Luoyang Medical College Xu Bing Qin Zuoliang antifungal Chinese herbal medicine research overview Yunnan medicinal Yu Jie Chen Meizhen Liang Ye Yang Tong flavonoids extraction and its anti-oxidation and antibacterial activity Shantou University Journal of Natural Science Wu Jianzhong Xu Chunbo Zhou Wei and other bamboo leaf preservative extraction and antibacterial effect food industry science and technology Yao Xiaomin Aloe and its antibacterial research food science and technology Sheng Guohua translation of Japanese bacteriostatic preservatives and antioxidants market and application trends China's food additives Sun Hualin domestic and international edible chemicals development prospects chemical technology economic standard curve method and standard addition method determination The results are consistent with the measurement results of the measurement methods of the table, indicating that there is no matrix interference, which can be determined by the standard curve method. The results of the recovery rate test plus the recovery test are shown in the table. The recovery rate of the three kinds of wine samples can be seen from the above experimental results. The graphite in the furnace graphite atomic absorption spectrometry is used to determine the manganese in the wine without matrix interference and background absorption. The wine sample does not need to be pretreated, and can be determined by the standard curve method. The measurement results are accurate and reliable. This method avoids the trouble of digestion and pretreatment of liquor sample and the pollution caused by digestion and pretreatment on the environment. It has certain practical value of analysis and test and the social significance of environmental protection, and it is worthy of popularization and application. National Standard Food Hygiene Inspection Method of the People's Republic of China Beijing China Standards Publishing House Huang Yanmei Wan Chunhuan Liquor Determination of Manganese Wines Yuan Minghua Wu Zhiming Determination of Manganese Environment in Liquor by Microinjection Flame Atomic Absorption Spectrometry Results Dilution multiples absorbance background Absorbance absorbance average relative standard deviation Test liquid content of raw wine sample content Liquor yellow wine wine table two methods of comparison of the results of the wine sample dilution factor test liquid content of the original wine sample content standard curve method standard addition Method standard curve method standard addition method white wine yellow wine wine sample dilution ratio test liquid content added content recovery content recovery liquor white wine wine table. Recovery rate test table standard solution measurement value experiment number standard solution concentration absorbance background absorption absorbance average relative standard deviation analysis detection (Finish) We have different weight for Polyster Car Covers, such as 170T or 190T Polyster Car Covers, 210D Polyster Car Covers,etc.We can also produce the Polyster Car Covers in different colors,such as blue & silver,etc. The Polyster Car Covers are not waterproof. It can just protect your car from snow,dusts,bird drops & scratch,etc. But the Polyster Car Covers are easily to be folded or unfolded. Since it's coming with light weight and the air is easily to go outside. We normally package the Polyster Car Covers with same material storage bag. If you want, we can also package it with vacuum packing to save the space. One 40HQ can hold much more pieces of vacuum packing car covers than normal packages. So it can help you save shipping cost. 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Food industry technology wine is a familiar drink, the wine contains a certain amount of manganese.