| 加工定制:是 | | 品牌:浩瀚色谱 | | 型号:XiangyingGC7990plus | |
| 测量范围:ppm | | 测量对象:蔬菜中的硝酸盐、亚硝酸盐 | | 控温范围:450 ℃ | |
| 功率:2000 w | | 尺寸:480 mm | | 重量:45 kg | |
| 甲缩醛:蔬菜中的硝酸盐、亚硝酸盐的 | | 粗苯:三苯 | | 二甲苯:变压器油 | |
| 多氯联苯:脂肪酸甲酯 | | 室内空气污染物:TVOC | | | |
Tengzhou City Xiangying Analysis Technology Co., Ltd. the XiangyingGC7990plus gas chromatography for the determination of nitrate and nitrite in vegetables.
Methods: in the sample, the nitric acid was used as catalyst, and the temperature was controlled at 90 C below C to react with benzene to produce nitrobenzene, extraction, and then use 7990plus gas chromatography detection. Results: sample recovery rate of nitrate recovery rate in between 79.72% ~ 101.79%, nitrite recovery rate in 88.06% ~ 105.81%; coefficient of variation 3.22 ~ 5.93, nitrate minimum detection concentration 0.75 mg / kg). The minimum detectable concentration of nitrite is 0.609 mg / kg. Conclusion: this method is simple and rapid, and it can avoid the interference of other ions, and it can improve the sensitivity and accuracy, easy to operate and easy to operate. Multi use of one machine.
滕州市翔鹰分析技术有限公司利用XiangyingGC7990plus气相色谱仪测定蔬菜中的硝酸盐和亚硝酸盐。
方法:样品中硝酸根用硫酸作催化剂,温度控制在90℃以下时可与苯发生反应生成硝基苯,萃取,然后利用7990plus气相色谱检测。结果:样品加标回收率硝酸盐的回收率在79.72%~101.79%之间,亚硝酸盐的回收率在88.06%~105.81%;变异系数3.22~5.93,硝酸盐***低检出浓度为0.75 mg/kg);亚硝酸盐的***低检测浓度为0.609 mg/kg。结论:该法的样品处理与经典的国标法比较取样量少、简单快速,避免了其他离子的干扰,提高了灵敏度和准确度,操作简便易性行。一机多用。
The Chinese technology, analysis technology leader
The gas chromatography technology, the industry benchmark enterprise
1 focused on the development of gas chromatograph
2 committed to becoming a leading supplier of analytical instruments in China
3 to provide you with the most powerful support
4 super high cost quality products
5 high quality and perfect after sales service
翔鹰技术,中国分析技术的领跑者
翔鹰技术,气相色谱行业*企业
1.专注气相色谱仪的研制
2.致力于成为国内分析仪器领先供应商
3.为你提供***强有力的支持
4.超高性价比品质过硬产品
5.优质完善快捷的售后服务