GB/T 11081-2005

📋 Scope / 适用范围 ai_extracted

1.1 This standard specifies the method for determining the ultraviolet absorbance of white oil. 1.2 This standard is applicable to cosmetic, medical, and food-grade white oils. It is not applicable to white oils containing additives that are soluble in dimethyl sulfoxide and exhibit fluorescence or fluorescence quenching properties. 1.3 This standard adopts the International System of Units (SI). Values expressed in terms of mesh are for reference only. 1.4 This standard does not purport to address all safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 7.1-7.2.

📖 Terms & Definitions / 术语和定义 ai_extracted

本标准具体的术语定义如下： / The specific terms and definitions in this standard are as follows:

3.2. 1 吸光度A absorbance 对透射比T的倒数取以10为底的对数，用符号表示： A ＝log,、（1／T)＝一logi o T ······························⋯⋯（1） 式中： T— 透射比（3.2.5)0

3.2.1 **Absorbance A** The base-10 logarithm of the reciprocal of the transmittance T, expressed by the symbol: A = log₁₀(1/T) = -log₁₀ T ······························ (1) Where: T — Transmittance (3.2.5).

吸光系数a

absorptivity 吸光度除以样品光程长度和浓度的乘积，用符号表示： u＝A/b e ··········································⋯⋯（2） 式中： A— 吸光度（3. 2.1)； b-— 样品光程长度（3. 2. 4) ; GB/T 11081-2005 c－一一浓度（3.2.3)0

absorptivity The quotient of the absorbance divided by the product of the sample path length and the concentration, expressed by the symbol: \[ u = \frac{A}{b \cdot c} \] Where: \( A \) — absorbance (3.2.1); \( b \) — sample path length (3.2.4); \( c \) — concentration (3.2.3).

浓度c

concentration 用竟每升表示的样品量。

Concentration The amount of sample expressed in milligrams per liter.

样品光程长度b

sample pathlength 在辐射能光束传播方向上，测得的从辐射能进人的样品表面到辐射能穿出的表面的距离，以cm 表示。

sample pathlength The distance measured along the direction of propagation of the radiant energy beam, from the surface where the radiant energy enters the sample to the surface where it exits, expressed in cm.

透射比T

transmittance 透过装在吸收池中试样萃取液的辐射功率与透过装在吸收池中参比溶剂的辐射功率之比率。 记为： T二P}/ P< ······························⋯⋯（3） 式中： 尸。— 透过试样萃取液的辐射功率； 尸。— 透过参比溶剂的辐射功率。

Transmittance The ratio of the radiant power transmitted through the sample extract solution contained in the absorption cell to the radiant power transmitted through the reference solvent contained in the absorption cell. It is denoted as: \[ T = \frac{P}{P_0} \] Where: \( P \) — Radiant power transmitted through the sample extract solution; \( P_0 \) — Radiant power transmitted through the reference solvent.

🔗 Related Standards / 同类标准