国内正规渠道可购买国外化学试剂:
Sigma-Aldrich:http://www.sigmaaldrich.com/china-mainland.html
Alfa Aesar:http://www.alfa.com/china/
TCI:http://www.tcishanghai.com.cn/
Acros Organics:http://www.acros.com/ 阅读这个条目剩下部分 »
国内正规渠道可购买国外化学试剂:
Sigma-Aldrich:http://www.sigmaaldrich.com/china-mainland.html
Alfa Aesar:http://www.alfa.com/china/
TCI:http://www.tcishanghai.com.cn/
Acros Organics:http://www.acros.com/ 阅读这个条目剩下部分 »
我国的试剂规格基本上按纯度(杂质含量的多少)划分,共有高纯、光谱纯、基准、分光纯、优级纯、分析和化学纯等7种。
国家和主管部门颁布质量指标的主要优级纯、分级纯和化学纯3种。
ISO 21348 中按波长对各种紫外线进行的定义:
Ultraviolet (UV) irradiances are defined as the wavelength range of (100 u λ < 400) nm.
Ultraviolet C (UVC) irradiances are defined as the wavelength range of (100 =/< λ < 280) nm.
Ultraviolet B (UVB) irradiances are defined as the wavelength range of (280 u λ < 315) nm.
Ultraviolet A (UVA) irradiances are defined as the wavelength range of (315 u λ < 400) nm.
Vacuum Ultraviolet (VUV) irradiances are defined as the wavelength range of (10 =/< λ < 200) nm.
Extreme Ultraviolet (EUV) irradiances are defined as the wavelength range of (10 =/< λ < 121) nm.
Lyman-alpha (Lyman-α) irradiances are defined as the wavelength range of (121 =/< λ < 122) nm.
Far Ultraviolet (FUV) irradiances are defined as the wavelength range of (122 =/< λ < 200) nm.
Middle Ultraviolet (MUV) irradiances are defined as the wavelength range of (200 u λ < 300) nm.
Near Ultraviolet (NUV) irradiances are defined as the wavelength range of (300 u λ < 400) nm.