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ASTM F2853
ASTM F2853
高精度X射线荧光光谱 (HDXRF) 分析仪是能量色散X射线荧光分析仪（EDXRF）的一种，利用特殊的光学系统，提高测试强度。HDXRF是新一代快速测试基材及表面涂层中铅、镉及其他毒性物质含量的方法，且不具破坏性。
湿化学技术是传统的用于测试表面涂层毒性物质含量的方式，它必须经过繁琐的刮板流程，然后进行高温酸消解并通过电感耦合等离子分析仪进行分析。HDXRF已获得 CPSC认可，与湿化学技术和传统XPF相比较，HDXRF可更为精确地检测表面涂层与基材的铅含量。它不具破坏性，只需对样品进行简单拆解（不需要刮板），也不需要化学处理流程（不需要加热和消解）。HDXRF节约了取板及前处理的时间，具有分析速度快，重现性好的特点。CPSC (消费品安全委员会) 规HDXRF可按照ASTM F2853-2010e1 方法测试表面涂层的铅含量，这优于传统XRF。
Q.1 Has the Consumer Product Safety Commission (CPSC) approved XRF testing for all coatings on children's products?
The CPSC has approved the use of XRF testing for paint layers on homogenous materials, according to ASTM F2853-10e1, Standard Test Method for Determination of Lead in Paint Layers and Similar Coatings or in Substrates and Homogenous Materials by Energy Dispersive X-Ray Fluorescence Spectrometry Using Multiple Monochromatic Excitation Beams.
Q.2 Have all types of XRF equipment been approved for use?
Only XRF equipment specified by ASTM F2853-10e1 may be used. The approved equipment uses energy dispersive X-ray fluorescence, which is commonly referred to as High Definition XRF (HDXRF) spectrometry for detection and quantification of lead. Handheld XRF units, and all other types of XRF equipment are not approved for third-party testing of coatings under the Consumer Product Safety Improvement Act (CPSIA).
Q.3 Can all coatings be analyzed using HDXRF?
HDXRF equipment is limited to the analysis of paint and similar coatings, excluding metallic coatings.
Q.4 Can metals, or coatings on metals, be analyzed using HDXRF?
If the metal is not homogenous, or if it is unknown if it is homogenous, then HDXRF cannot be used. Electroplated metals are not homogenous and are not approved for analysis using this method.
Q.5 How long does it take for a typical test?
The duration of a typical single-color surface coating test is around six to eight minutes. There is an additional test required for substrate analysis to isolate the surface coating. Sample preparation may add time to analysis (e.g., the sample is too big).
Q.6 Can coatings be composited for HDXRF testing as is currently done with the wet chemistry method?
No, compositing of coatings is not possible with HDXRF. Each color must be analyzed separately. In some cases, depending upon the sample configuration, each substrate may require separate analysis.
Q.7 Is ASTM F2853-10e1 the appropriate test method for coatings of any lead content level?
This test method is applicable for a lead range of 14 - 1200 mg/kg for uncoated materials, and 30 to 450 mg/kg for coated samples. Results near or above these ranges should be re-evaluated using wet chemistry.
Q.8 What approach would TECERT recommend to clients at this time?
The most logical approach would be to use this technology for applications best suited to it, and test the balance with traditional wet chemistry methods.
高精度X射线荧光光谱 (HDXRF) 分析仪是能量色散X射线荧光分析仪（EDXRF）的一种，利用特殊的光学系统，提高测试强度。HDXRF是新一代快速测试基材及表面涂层中铅、镉及其他毒性物质含量的方法，且不具破坏性。
湿化学技术是传统的用于测试表面涂层毒性物质含量的方式，它必须经过繁琐的刮板流程，然后进行高温酸消解并通过电感耦合等离子分析仪进行分析。HDXRF已获得 CPSC认可，与湿化学技术和传统XPF相比较，HDXRF可更为精确地检测表面涂层与基材的铅含量。它不具破坏性，只需对样品进行简单拆解（不需要刮板），也不需要化学处理流程（不需要加热和消解）。HDXRF节约了取板及前处理的时间，具有分析速度快，重现性好的特点。CPSC (消费品安全委员会) 规HDXRF可按照ASTM F2853-2010e1 方法测试表面涂层的铅含量，这优于传统XRF。
Q.1 Has the Consumer Product Safety Commission (CPSC) approved XRF testing for all coatings on children's products?
The CPSC has approved the use of XRF testing for paint layers on homogenous materials, according to ASTM F2853-10e1, Standard Test Method for Determination of Lead in Paint Layers and Similar Coatings or in Substrates and Homogenous Materials by Energy Dispersive X-Ray Fluorescence Spectrometry Using Multiple Monochromatic Excitation Beams.
Q.2 Have all types of XRF equipment been approved for use?
Only XRF equipment specified by ASTM F2853-10e1 may be used. The approved equipment uses energy dispersive X-ray fluorescence, which is commonly referred to as High Definition XRF (HDXRF) spectrometry for detection and quantification of lead. Handheld XRF units, and all other types of XRF equipment are not approved for third-party testing of coatings under the Consumer Product Safety Improvement Act (CPSIA).
Q.3 Can all coatings be analyzed using HDXRF?
HDXRF equipment is limited to the analysis of paint and similar coatings, excluding metallic coatings.
Q.4 Can metals, or coatings on metals, be analyzed using HDXRF?
If the metal is not homogenous, or if it is unknown if it is homogenous, then HDXRF cannot be used. Electroplated metals are not homogenous and are not approved for analysis using this method.
Q.5 How long does it take for a typical test?
The duration of a typical single-color surface coating test is around six to eight minutes. There is an additional test required for substrate analysis to isolate the surface coating. Sample preparation may add time to analysis (e.g., the sample is too big).
Q.6 Can coatings be composited for HDXRF testing as is currently done with the wet chemistry method?
No, compositing of coatings is not possible with HDXRF. Each color must be analyzed separately. In some cases, depending upon the sample configuration, each substrate may require separate analysis.
Q.7 Is ASTM F2853-10e1 the appropriate test method for coatings of any lead content level?
This test method is applicable for a lead range of 14 - 1200 mg/kg for uncoated materials, and 30 to 450 mg/kg for coated samples. Results near or above these ranges should be re-evaluated using wet chemistry.
Q.8 What approach would TECERT recommend to clients at this time?
The most logical approach would be to use this technology for applications best suited to it, and test the balance with traditional wet chemistry methods.
