13.060.60;17.240 标准查询与下载

BS ISO 10704:2010 水质 非海水中总α和总β放射性的测量 薄放射性源储藏方法

Water quality. Measurement of gross alpha and gross beta activity in non-saline water. Thin source deposit method

BS ISO 10704:2009 水质.非海水中总α和总β放射性的测量.薄放射性源储藏方法

Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method

NF M60-819:2010 水质.非海水中总α和总β放射性的测量.薄放射性源储藏方法

Water quality - Measurement of gross alpha and gross beta activity in non-saline water - Thin source deposit method.

SNI ISO 10703:2009 水质. 用高分辨率伽马射线光谱测定法测定放射性核素活性浓度

Water quality-Determination of the activity concentration of radionuclides-Method by high resolution gamma-ray spectrometry

SNI ISO 9696:2009 水质. 淡水中总α放射性的测量. 浓密源法

Water quality - Measurement of gross alpha activity in non-saline water - Thick source method

KS I ISO 10703:2008 水质.放射性核辐射活性浓度的测定.高分辨率γ光谱测定法

이 표준은 다중채널 분석기와 결합한 높은 에너지 분해능이 있는 게르마늄 검출기를 이용한 감

Water quality－Determination of the activity concentration of radionuclides－Method by high resolution gamma-ray spectrometry

NF M60-815:2008 水质.不含盐的水中总α活度的测量.厚源法

Water quality - Measurement of gross alpha activity in non-saline water - Thick source method.

NF M60-818:2008 水质.放射性核辐射活性浓度的测定.高分辨率γ光谱测定法

Water quality - Determination of the activity concentration of radionuclides - Method by high resolution gamma-ray spectrometry.

BS ISO 9696:2007 水质.不含盐的水中总α活度的测量.厚源法

Water quality - Measurement of gross alpha activity in non-saline water - Thick source method

ISO 10703:2007 水质.放射性核辐射活性浓度的测定.高分辨率γ光谱测定法

This International Standard specifies a method for the simultaneous determination of the activity concentration of various radionuclides emitting gamma rays with energies 40 keV < E < 2 MeV in water samples, by gamma-ray spectrometry using germanium detectors with high energy resolution in combination with a multichannel analyser. NOTE The determination of the activity concentration of radionuclides emitting gamma rays with energy below 40 keV and above 2 MeV is also possible within the scope of this International Standard, provided both the calibration of the measuring system and the shielding are adapted to this purpose. This International Standard includes the procedures for energy calibration, determination of the energy dependent sensitivity of the measuring system, the analysis of the spectra and the determination of the activity concentration of the various radionuclides in the sample studied. It is only applicable to homogeneous samples. Samples with activities typically between 1 Bq and 104 Bq can be measured as such, i.e. without dilution or concentration of the sample or special (electronic) devices. Depending on different factors, such as the energy of the gamma rays and the emission probability per nuclear disintegration, the size and geometry of the sample and the detector, the shielding, the counting time and other experimental parameters, the sample should be concentrated by evaporation when activities below about 1 Bq have to be measured. Also, when the activity is considerably higher than 104 Bq, the sample should be either diluted or an aliquot of the sample should be taken or the source to detector distance should be increased, or a correction for pile-up effects should be applied.

Water quality - Determination of the activity concentration of radionuclides - Method by high resolution gamma-ray spectrometry

ISO 9696:2007 水质.不含盐的水中总α活度的测量.厚源法

This International Standard specifies a method for the determination of gross alpha activity in non-saline waters for alpha-emitting radionuclides which are not volatile at 350 °C. It is possible to determine supported volatile radionuclides measured to an extent determined by half-life, matrix retention (of the volatile species) and the duration of measurement (counting time). The method is applicable to raw and potable waters. The range of application depends on the amount of suspended matter in the water and on the performance characteristics (background count rate and counting efficiency) of the counter.

Water quality - Measurement of gross alpha activity in non-saline water - Thick source method

NF M60-805-5:2005 核能.环境放射性测量.水.第5部分:水中根据α光谱测定法测量铀的放射性和浓度

Nuclear energy - Measurement of environmental radioactivity - Water - Part 5 : measurement of the activity and concentration of uranium in water by alpha spectrometry.

NF M60-801:2004 核能.环境放射性的测量.水.根据低盐水中的钚239当量测量α活性指数

Nuclear energy - Measurement of environmental radioactivity - Water - Measurement of alpha activity index in terms of plutonium 239 equivalent in low salted water.

NF M60-800:2004 核能.环境放射性的测量.水.根据低盐水中的锶90和钇90当量测量β总的活性指数

Nuclear energy - Measurement of environmental radioactivity - Water - Measurement of global beta activity index in terms of strontium 90 and yttrium 90 equivalent in low salted water.