发布时间：2024-05-27 17:49:26 - 更新时间：2024年06月29日 15:22
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本标准适用于以L-天门冬氨酸为原料，经酶法生产制得的食品添加剂L-丙氨酸。
National Food Safety Standard Food Additive L- Alanine
1.1 本标准规定了使用丙氨酸-EPR剂量测量系统测定光子和电子照射下被照射材料中的吸收剂量所涉及的剂量计材料的选择、剂量计制备、仪器设备和剂量测量程序。该系统依赖于电子顺磁共振谱仪对丙氨酸中氨基酸衍生的自由基的测量。该系统被定为参考标准级剂量系统（见GB/T 16640）。 1.2 本标准适用在下述条件下测量吸收剂量的丙氨酸-EPR剂量测量系统： 1.2.1 吸收剂量范围：1Gy~10Gy。 1.2.2 吸收剂量率：≤10Gy.s（连续辐射场）。 ≤5×10Gy.s（脉冲辐射场） 1.2.3 辐射能量范围：0.1MeV~28MeV。 1.2.4 辐照温度范围：-60℃~90℃。 1.3 以国际单位制给出的值作为标准值，括号内的量值仅供参考。 1.4 本标准不涉及与使用相关的安全问题。本标准的使用者负责建立适用的安全和健康标准，并在使用前确定其适用的限制范围。
Standard method for use of an alanine-EPR dosimetry system
本标准规定了辐射加工中使用丙氨酸-EPR剂量测量系统测量光子和电子照射的材料中吸收剂量时所涉及的剂量计材料选择、剂量计制备、仪器设备、校准方法、EPR波谱测量的剂量测量程序以及不确定度的表述。 本标准适用于在下述条件下测量吸收剂量的丙氨酸-EPR剂量测量系统： 吸收剂量范围：1～10Gy 吸收剂量率范围：≤10Gy·s（连续辐射场） ≤10Gy·s（脉冲辐射场） 辐射能量范围：≤30MeV 辐照温度范围：-60～十90℃
Alanine-EPR dosimetry system for radiation processing
本标准规定了化学试剂DL-丙氨酸的技术要求、试验方法、检验规则和包装及标志。本标准适用于化学试剂DL一丙氨酸的检验。
本标准规定了化学试剂DL丙氨酸的技术要求、试验方法、检验规则和包装及标志。 本标准适用于化学试剂DL-丙氨酸的检验。
Chemical reagent. DL-Alanine
本标准规定了采用纸电泳法和比色法测定羊毛纤维中磺基丙氨酸含量的方法。 本标准适用于任何形式的、未染色及染色、氧化与还原的全毛纺织品，即散纤维毛条、毛纱和织物。测定混纺织物时，必须确知羊毛的含量。 本标准也适用于碳化羊毛的检验。
Determination of systine acid content of wool hydrolysates by paper electrophoresis and colorimetry
项目 要求 感官指标 外观 粉末 颜色 白色或类白色 气味 微弱的特有气味 理化指标 月桂酰丙氨酸含量（质量分数）/% ≥97.0 pH（25℃） 3.5~5.0 熔点（℃） 82~84 比旋光度（20 ℃，2% (w/v)于甲醇）/° -14.7至-16.7 灼烧残渣（质量分数）/% ≤1.0 干燥失重（质量分数）/% ≤1.0 鉴别试验 红外光谱 样品实测值与红外光谱特征峰一致 杂质指标 乙醇（质量分数）/% ＜0.1 丙酮（质量分数）/% ＜0.1 月桂酰丙氨酰丙氨酸含量（质量分数）/% ＜3.0 L-丙氨酸（质量分数）/% ＜1.0 月桂酸（质量分数）/% 高效液相色谱图中不出现相应色谱峰 卫生指标 菌落总数/(CFU/g) ≤500 霉菌和酵母菌总数/(CFU/g) ≤100 耐热大肠菌群/g 不得检出 金黄色葡萄球菌/g 不得检出 铜绿假单胞菌/g 不得检出 汞/（mg/kg） ≤1 铅/（mg/kg） ≤10 砷/（mg/kg） ≤2 镉/（mg/kg） ≤5
Cosmetic ingredients―Lauroyl alanine
L－Alanine
L-Alanine (Reagent)
L-Alanine (Reagent)
本标准规定了丙氨酸氨基转移酶测定试剂盒(IFCC法)的测定原理、要求、试验方法、标签和使用说明、包装、运输和贮存等。本标准适用于丙氨酸氨基转移酶测定试剂盒(IFCC法)的质量控制,该产品用于体外定量测定人体血清或血浆中丙氨酸氨基转移酶的活性。
Alanine aminotransferase diagnostic kit.(IFCC method)
This practice covers dosimeter materials, instrumentation,and procedures for using the alanine-EPR dosimetry system for measuring the absorbed dose in the photon and electron radiation processing of materials. The system is based on electron paramagnetic resonance (EPR) spectroscopy of free radicals derived from the amino acid alanine.
Practice for use of the alanine-EPR dosimetry system
Practice for use of the alanine-EPR dosimetry system
WS/T 404的本部分规定了中国成年人血清丙氨酸氨基转移酶、天门冬氨酸氨基转移酶、碱性磷酸酶和γ-谷氨酰基转移酶的参考区间及其应用。 本部分适用于医疗卫生机构实验室血清丙氨酸氨基转移酶、天门冬氨酸氨基转移酶、碱性磷酸酶和γ-谷氨酰基转移酶检验结果的报告和解释，有关体外诊断厂商也可参照使用。
Reference intervals for common clinical biochemistry tests.Part 1:Serum alanine aminotransferase,aspartate aminotransferase,alkaline phosphatase and γ-glutamyltansferase
Standard Practice for Use of the Alanine-EPR Dosimetry System
本标准规定了在临床医学应用中，测定丙氨酸氨基转移酶（ALT）催化活性浓度（磷酸吡哆醛）的参考方法。 本标准主要适用于参考实验室，作为丙氨酸氨基转移酶催化活性浓度（磷酸吡哆醛）测定的溯源，也可作为与酶活性浓度检验有关的仪器和试剂生产企业的溯源，可供有关认可单位及质量管理部门应用。
Reference procedure for the measurement of catalytic activity concentration of alanine aminotransferase (No pyridoxal-5'-phosphoric acid)
L-Asparagine monohydrate (Reagent)
이 표준은 종이 전기영동 및 비색분석을 사용해서 양모 가수분해물의 시스테인 산 함량을 측정
Wool－Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry
이 표준은 종이 전기영동 및 비색분석을 사용해서 양모 가수분해물의 시스테인 산 함량을 측정
Wool－Determination of cysteic acid content of wool hydrolysates by paper electrophoresis and colorimetry
Practice for use of the alanine-EPR dosimetry system
1．1 本标准规定了使用丙氨酸一EPR剂量测量系统测定光子和电子照射下被照射材料中的吸收剂量 所涉及的剂量计材料的选择、剂量计制备、仪器设备和剂量测量程序。该系统依赖于电子顺磁共振谱仪 对丙氨酸中氨基酸衍生的自由基的测量。该系统被定为参考标准级剂量系统(见GB／T 16640)。 1．2本标准适用于在下述条件下测量吸收剂量的丙氨酸一EPR剂量测量系统： 1．2．1 吸收剂量范围：1 Gy～lOGy。 1．2．2 吸收剂量率：≤lOGy·S(连续辐射场) ≤5×10Gy·s(脉冲辐射场)。 1．2．3 辐射能量范围：0．1 MeV~28 MeVu。 1．2．4辐照温度范围：一60℃～90℃。 1．3 以国际单位制给出的值作为标准值，括号内的量值仅供参考。 1．4本标准不涉及与使用相关的安全问题。本标准的使用者负责建立适用的安全和健康标准，并在使 用前确定其适用的限制范围。
Practice for use of the alanine-EPR dosimetriy system
Standard Practice for Use of the Alanine-EPR Dosimetry System
4.1 The alanine-EPR dosimetry system provides a means for measuring the absorbed dose. It is based on the measurement of specific stable free radicals in crystalline alanine generated by ionizing radiation. 4.2 The dosimeter contains crystalline alanine and registers the absorbed dose by the formation of alanine-derived free radicals. Identification and measurement of alanine-derived free radicals are performed by EPR spectroscopy. 4.3 The measurement of free radicals by EPR spectroscopy is nondestructive. Alanine dosimeters can be read out repeatedly and hence can be used for archival purposes. NOTE 1 - For a comprehensive discussion of various dosimetry methods and materials applicable to the radiation types and energies discussed in this practice, see ASTM Practice E 668, ISO/ASTM Practices 51204, 51400, 51431, ISO/ASTM Guide 51261, and ICRU Reports 14, 17, 34, 35, 37, 44 and 60. 4.4 Alanine-EPR dosimetry systems are used as referenceor transfer-standard or routine dosimetry systems in radiation applications that include: sterilization of medical devices and pharmaceuticals, food irradiation, polymer modifications, medical therapy and radiation damage studies in materials. 4.5 The EPR signal amplitudes of irradiated alanine dosimeters have been shown to be equivalent for photon and electron absorbed doses (4).1.1 This practice covers materials description, dosimeter preparation, instrumentation, and procedures for using the alanine-EPR dosimetry system for measuring the absorbed dose in the photon and electron irradiation processing of materials. The system is based on electron paramagnetic resonance (EPR) spectroscopy of free radicals derived from the amino acid alanine. It is classified as a reference-standard dosimetry system (see ISO/ASTM Guide 51261)).1.2 This practice covers alanine-EPR dosimetry systems for dose measurements under the following conditions:1.2.1 The absorbed dose range is between 1 and 10 5 Gy.1.2.2 The absorbed dose rate is up to 102 Gy s1 for continuous radiation fields and up to 5 10 7 Gy s1 for pulsed radiation fields ().1.2.3 The radiation energy for photons and electrons is between 0.1 and 28 MeV (, , ).1.2.4 The irradiation temperature is between 60 and + 90176;C (, ).1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.1.4 This standard does not purport to address all of the 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.
Standard Practice for Use of the Alanine-EPR Dosimetry System
Practice for use of the alanine-EPR dosimetriy system
Practice for use of the alanine-EPR dosimetry system
Standard Practice for Use of the Alanine-EPR Dosimetry System
この規格は，0.1～28 MeVの光子，及び0.3～28 MeVの電子線で照射された物質における吸収線量を測定するための，アラニン線量計測装置について規定する。
The alanine dosimetry system
1 This practice covers materials description, dosimeter preparation, instrumentation, and procedures for using the alanine-EPR dosimetry system for measuring the absorbed dose in materials irradiated with photons and electrons. The system is based on electron paramagnetic resonance (EPR) spectroscopy of the amino acid alanine. It is classified as a reference standard dosimetry system (see Guide E 1261). 2 This practice covers alanine-EPR dosimetry systems for dose measurements under the following conditions: 2.1 The absorbed dose range is between 1 and 10 Gy. 2.2 The absorbed dose rate is up to 10 Gy s for continuous radiation fields and up to 10 Gy s for pulsed radiation fields (1, 2). 2.3 The radiation energy range for photons is between 0.1 and 50 MeV and for electrons is between 0.3 and 50 MeV (1, 2). 2.4 The irradiation temperature is between -60 and +90℃ (2, 3). 3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for informa-tion only. 4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.
Practice for use of the alanine-EPR dosimetry system
1 This practice covers materials description, dosimeter preparation, instrumentation, and procedures for using the alanine-EPR dosimetry system for measuring the absorbed dose in materials irradiated with photons and electrons. The system is based on electron paramagnetic resonance (EPR) spectroscopy of the amino acid alanine. It is classified as a reference standard dosimetry system (see Guide E 1261). 2 This practice covers alanine-EPR dosimetry systems for dose measurements under the following conditions: 2.1 The absorbed dose range is between 1 and 10 Gy. 2.2 The absorbed dose rate is up to 10 Gy s for continuous radiation fields and up to 10 Gy s for pulsed radiation fields (1, 2). 2.3 The radiation energy range for photons is between 0.1 and 50 MeV and for electrons is between 0.3 and 50 MeV (1, 2). 2.4 The irradiation temperature is between -60 and +90℃ (2, 3). 3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for informa-tion only. 4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.
Practice for use of the alanine-EPR dosimetry system
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