EN 1233-1996 en Water Quality - Determination of Chromium - Atomic Absorption Spectrometric Methods《水质 铬的测定 原子吸收光谱测量法》.pdf
《EN 1233-1996 en Water Quality - Determination of Chromium - Atomic Absorption Spectrometric Methods《水质 铬的测定 原子吸收光谱测量法》.pdf》由会员分享,可在线阅读,更多相关《EN 1233-1996 en Water Quality - Determination of Chromium - Atomic Absorption Spectrometric Methods《水质 铬的测定 原子吸收光谱测量法》.pdf(14页珍藏版)》请在麦多课文档分享上搜索。
1、- - STD*BSI BS EN L233-ENGL 1777 Lb24bbS 0585478 111111 BRITISH STANDARD Water quality - Determination of chromium - Atomic absorption spectrometric methods it it rn The European standard EN 1233 : 1996 has the status of a British Standard ICs 13.060.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PE
2、RMITTED BY COPYRIGHT LAW BS EN 1233 : 1997 BS 68: Section 2.38 : 1997 STD-BSI BS EN 1233-ENGL I997 Lb2Libb9 0585Li79 380 D AmdNo. Date BS EN 1233 : 1997 Text affected Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee Ew3, W
3、ater qmty, to Subcommittee Ew3/2, Physical, chemical and biochemical methods, upon which the following bodies were represente3 British Agrochemicals Association Ltd. British Ceramic Research British Gas pic British Soft Drinks Association Ltd. Chemical Indusries Association Convention of Scottish Lo
4、cal Authorities Department of the Environment (Water Directorate) Environment agency GAMBICA (BEAMA LM.) Indusird Water Society Laboratory of the Government Chemist Royal Society of Chemistry Soap and Detergent Industry Association Society of Chemical Industty Swimming Pool and AUied “kades Associat
5、ion Ltd. Water Companies Association Water Research Centre Water Services Association of England and Waies This British Standard, having been prepared under the direction of the Health and Environment Sector Board, was pubiished under the authority of the Standards i3oard and comes inta effect on 16
6、 January 1997 O BSI 1997 The foiiowing BSI references reiate ta the work on this Standard: Committee reference EHMZ Draft for comment 93/508226 DC ISBN O 680 26789 X * M * STD-BSIBS EN 1233-ENGL I777 162Libb9 0585500 722 BS EN 1233 : 1997 Contents Committees responsibe page inside hnt cover Nationai
7、 foreword ii Foreword 2 Method introduction 1 scope 2 Normative references 3 Determination of chromium by flame atomic absorption spectromebiy 4 Annex A sediment samples 8 hbles 1 precision daa for clause 3 5 Determination of chromium by eledrothermai atomization atomic absorption spectrometry 6 (in
8、formative) information on prekatment and digestion of sludge and 2 Interferingions 3 Precision data for clause 4 5 7 Q BSI 1997 i STD.BSI BS EN 1233-ENGL I777 M Ibi9bb7 0585501 8b7 M BS EN 1233 : 1997 National foreword This British Standard has been prepared by Technid committee EH and is the Englis
9、h language version of EN 1233 Water quuLity - DetemLinat.ion of chmium - Atomic absolption spectrmne methods, published by the European Committee for Standardization (CEN). It supersedes BS 6068 : Section 2.38 : 1990, which is withdrawn. NOTE. The tests described in this British Standard should oniy
10、 be carried out by suitably qualied persons with an appropriate level of chemical expertise. Standard chemical procedures should be followed throughout Cross-references Publication referred to Corresponding British Standard BS 6068 Water quality Part 6 Sampling Section 6.2 : 1991 Guidance on samplin
11、g techniques Section 6.3 : 1996 Guidame on ule pre-sermtm and handling of samples EN 25667-2 : 1993 Is0 56673 : 1994 Compliance with a British Standard does not of itself confer immunity from legal obligations. ii O BSI 1997 STD.BSI BS EN 1233-ENGL L777 Lb24bbS 0585502 7T5 EUROPEAN SIANDARD NORME EU
12、R0PEE”E EUROP- NOEWI EN 1233 July 1996 ICs 13.060.40 Descriptors: water, quality, chemical analysis, determination of content, chromium, atomic absorption spedmmetry Eh- for example: pipette 1,0 ml, 2,6 ml, 5,O ml, 10,O ml and 20,O ml of chromium standard solution (see 3.2.7.2) into a series of 100
13、ml volumetric flasks. Add to each fhsk depending on the pretreatment (see 3.4.2 and 3.4.3) 10 ml or 2 ml of nitric acid (see 3.2.3) respectiveiy and 10 ml of lanthanum chIoride solution (see 3.2.6), dilute to the mark with water and mix These solutions correspond to chromium concentmiions of 0,50 mg
14、/i, 1,25 mgil, 2,50 ma, 5,00 mg/l and 10,O mg/i respectively Proceed accordingly for other concentration ranges of interest. 3.6.3 Cdbration Set up the instrument in accordance with the manufacturers instructions (at wavelength A = 357,9 nm) using a nitrous oxiddacetylene flame. Aspirate a calibrati
15、on solution (see 3.6.2) and optimize the aspiration, the burner height and the flame conditions. Aust the response of the instrument to zero absorbance with wateE In tum, aspirate the set of calibration solutions (see 3.6.2) and the blank solution (see 3.6.1). Plot a graph having the chromium concen
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- EN12331996ENWATERQUALITYDETERMINATIONOFCHROMIUMATOMICABSORPTIONSPECTROMETRICMETHODS 水质 测定 原子 吸收光谱 测量

链接地址:http://www.mydoc123.com/p-706162.html