Traditional Chinese medicine has both symptoms and minor side effects, which is favored by patients at home and abroad. At present, the excessive use of sulfur in the processing and processing of Chinese herbal medicines and food is serious, which has caused many adverse effects on the quality of medicinal materials, the natural environment and people's health. "Chinese Pharmacopoeia" 2005 edition of the first supplement to increase the sulfur dioxide residue determination. "Chinese Pharmacopoeia" 2010 edition of the second supplement in the yam, aspartame, trichosanthin, Tianma, Achyranthes, white and white atractylodes, white peony root, Codonopsis in the inspection project shall not exceed 400mg / kg residual sulfur dioxide.
Tengzhou Xiangying Analytical Technology Co., Ltd. used GC7990 gas chromatograph, determination of sulfur dioxide in Chinese herbal medicine residues, the results were satisfactory.
中药具有标本兼治、副作用小等特点深受国内外患者的青睐，而中药中农残、重金属和硫磺污染阻碍了我国中医药的国际化进程。目前中药材和食品炮制和加工过程中硫磺过度使用的情况严重，给药材质量、自然环境、人们身体健康等造成了许多不利影响。《中国药典》2005年版*增补本增加了二氧化硫残留量测定法。《中国药典》2010年版第二增补本在山药、天冬、天花粉、天麻、牛膝、白及、白术、白芍、党参的检查项目中规定二氧化硫残留量不得过400mg/kg。
滕州市翔鹰分析技术有限公司采用GC7990气相色谱仪，测定中药材中二氧化硫残留量，结果满意。
XiangyingGC7990plus features:
1 excellent performance, competitive price, to meet the customers' choice
2 multi industry adaptability
3 outstanding performance in all kinds of harsh environment
INJ
A variety of sampling ports can be equipped with: packed column inlet, shunt / non shunt capillary inlet,
Hydrogen flame ionization detector (FID)
Maximum use temperature: 400
The minimum detection limit: -12 = 2.5*10 g/s (n-C16)
Linear range: 107 (+ 10%)
XiangyingGC7990plus特点：
- 卓越的性能，具有竞争力的价格，满足广大客户的选择
- 多行业适应性
3. 在各种苛刻环境下均表现出色
进样口
多种进样口可配：填充柱进样口、分流/不分流毛细管进样口、
氢火焰离子化检测器（FID）
***高使用温度：400℃
***小检出限：≤2.5*10 -12 g/s(n-C16)
线性范围：107（±10%）
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