浩瀚顶空气相色谱仪测定杏脯中二氧化硫GC7990

Tengzhou Xiangying Analytical Technology Co., Ltd. established headspace gas chromatography determination of sulfur dioxide in the apricot residue method, to explore the gas-liquid volume ratio, add acid, equilibrium temperature and equilibrium time on the test results. 5 g sample, 10 g paraffin, 200 ml water and 25 ml hydrochloric acid solution were added to the 450 mL headspace vial. The mixture was equilibrated at 75 ° C for 20 min and then placed at room temperature. 0.5 mL headspace gas was sampled for qualitative and quantitative analysis. The linear correlation coefficient r2 of the method was 0.992, the detection limit and the limit of quantification were 0.1 mg / kg and 1.0 mg / kg, respectively. The relative standard deviation of the method was 1.9% ~ 3.2% (n = 6) Was 89.4% ~ 94.3%. The method is simple, fast, high sensitivity, human error is small, to meet the residual sugar content of apricot in the bulk detection requirements.
滕州市翔鹰分析技术有限公司建立顶空气相色谱测定杏脯中二氧化硫残留的方法，探讨了气液体积比、加酸量、平衡温度和平衡时间对检测结果的影响。向450 mL顶空瓶内加入5 g样品、10 g石蜡、200 mL水及25 mL盐酸溶液，于75℃平衡20 min后放至室温，抽取0.5 mL顶空气体进行定性定量分析检测。该方法标准工作曲线线性相关系数r2为0.992，检出限和定量限分别为0.1，1.0 mg／kg，测定结果的相对标准偏差为1.9%～3.2%(n=6)，样品加标回收率为89.4%～94.3%。该法操作简便、快捷，灵敏度高，人为误差小，满足杏脯中二氧化硫残留的批量检测要求。 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：

1. 卓越的性能，具有竞争力的价格，满足广大客户的选择
2. 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%）