"Times New Roman"">工作环境中的粉尘种类较多, "Times New Roman"">主要有矽尘、煤尘、锅炉尘、石棉尘、水泥尘等。当粉尘中的游离二氧化硅含量较高时, mso-hansi-font-family:"Times New Roman"">对接触人员危害较大, "Times New Roman"">因此有必要加强对粉尘中游离二氧化硅的测定。以往检测粉尘中的游离二氧化硅含量, mso-hansi-font-family:"Times New Roman"">均采用GB 5748 - 1985 mso-hansi-font-family:"Times New Roman"">规定的“焦磷酸重量法”[ 1 ] , mso-hansi-font-family:"Times New Roman"">但该方法操作繁琐、检测周期长、准确性差, mso-hansi-font-family:"Times New Roman"">难以满足批量检测的要求。

"Times New Roman"">为了提高检测的准确度, "Times New Roman"">实现批量检测的目的, "Times New Roman"">我公司提供工作环境中粉尘及煤矿粉尘测定配套设备----Nolay-4000D "Times New Roman"">矿用粉尘中游离二氧化硅检测仪。（符合中华人民共和国国家职业卫生标准GBZ/T 192.4 mso-hansi-font-family:"Times New Roman"">—2007  "Times New Roman"">工作场所空气中粉尘测定）广泛应用于疾控中心、煤矿等行业。

Nolay-4000D矿用粉尘中游离二氧化硅检测仪规格参数

"Times New Roman"">光谱范围：7800 "Times New Roman"">～350 cm-1

"Times New Roman"">分辨率：优于1.0 cm-1

"Times New Roman"">波数精度：≤0.01cm-1

"Times New Roman"">信噪比：优于15000:1 "Times New Roman"">／优于30000:1 "Times New Roman"">（P-P值，4cm-1 mso-hansi-font-family:"Times New Roman"">，一分钟扫描） 可选

"Times New Roman"">分束器：KBr "Times New Roman"">基片镀锗（进口）

"Times New Roman"">光源:高能量、高效率、长寿命陶瓷光源（进口）

"Times New Roman"">干涉仪：非正交Michelson "Times New Roman"">干涉仪

"Times New Roman"">接收器：带有防潮膜的高灵敏度DLATGS "Times New Roman"">接收器（进口）

"Times New Roman"">数据传输接口：USB2.0 "Times New Roman"">（兼容3.0）

"Times New Roman"">支持系统：Windows XP "Times New Roman"">、Windows Vista "Times New Roman"">、Windows 7 "Times New Roman"">、Windows 8 "Times New Roman"">、Windows 8.1 "Times New Roman"">、Windows 10

"Times New Roman"">尺寸:450mm "Times New Roman"">×350mm×210 mm

"Times New Roman"">重量：13Kg

"Times New Roman"">配套附件：

"Times New Roman"">压片机，压片模具， KBr "Times New Roman"">光谱纯，玛瑙研钵，十万分之一天平，灰化炉或马弗炉，干燥箱及干燥器，α石英、200 mso-hansi-font-family:"Times New Roman"">目粉尘筛，空气采样器等

"Times New Roman"">附国标检测方法：

 GBZ

"Times New Roman"">中华人民共和国国家职业卫生标准

GBZ/T 192.4—2007 mso-hansi-font-family:"Times New Roman"">工作场所空气中粉尘测定