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1、JIS in flue gas JAPANESE I N DUSTR IAL STANDARD Translated and Published by Japanese Standards Association Methods for determination of bromine . I ICs 13.040.40 ; 71.040.40 Descriptors : bromine, exhaust gases, gas analysis, industrial air pollutants, industrial wastes, sampling methods, molecular
2、absorption spectro- photometry, electrochemical methods, determination of content Reference number : JIS K 0086 : 1998 (E) 8s Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo
3、reproduction or networking permitted without license from IHS -,-,- STD-JIS K 0085-ENGL 1998 4933b08 0553747 479 m K 0085 : 1998 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberation
4、s at Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law: Date of Establishment: 1976-01-01 Date of Revision: 1998-03-20 Date of Public Notice in Official Gazette: 1998-03-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Envi
5、ronment Technical Committee on Air Quality JIS K 0085:1998, First English edition published i n 1998-10 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original T I S is to be the
6、 final authority. d Q JCA 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Co
7、pyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,- 4933b08 0553748 305 I Bromine compound in the ex- , ( mgHBr/
8、m3,) Absorber method 0.4 to 50 JAPANESE INDUSTRIAL STANDARD JIS K 0085 : 1998 Methods for determination of bromine in flue gas 1 Scope This Japanese Industrial Standard specifies the methods for determination of total bromine in gas state inorganic bromides such as bromine, hydrogen bromide, etc. in
9、 flue gas. Remarks 1 In this Standard, flue gas means ones which are generated by being ac- companied with combustion, chemical reaction, etc. and exhausted out to flue, chimney or duct (hereafter referred to as “duct”). 2 The normative references to this Standard are shown in Attached Ta- ble l. 2
10、Common items The common items such as methods of chemical analysis, sampling methods of flue gas and molecular absorptiometric analysis shall be in accordance with JIS K 0050, JIS K 0095 and JIS K 0115 respectively. 3 and summary shall be shown in Table 1. Classification of analytical methods and su
11、mmary The methods for determination Table 1 Classification of analytical methods and summary fethods of etermina- ion hiosulate itrimetric aethod aercury (II) .hiocy anate ibsorpti- )metry Note (: Outlines ofanalytical method I I Range of de- Summary Sampling termination () I vol ppm haust gas is ab
12、sorbed into sodi- um hydroxide absorbent, and ixidized by sodium hypochlorite solution to bromic acid ion. The excess hypochlorite is reduced by sodium formate, and this bromic acid ion is determined by thiosulfate titrimetric method. After absorbing bromine com- pound in the exhaust gas into sodium
13、 hydroxide absorbent, making acidic and oxidizing with potassium permanganate solution, and extract the oxi- dized ion into carbon tetrachlo- ride. Add water, ammonium iron (Ill) sulfate solution and mercury ( II ) thiocyanate solu- tion to this layer, and measure the absorbance of coloured wa- Abso
14、rbent : Sodium hydroxide solution (0.1 mol/ i ) Absorbent volume: 35 ml Standard sampling volume : 20 1 Absorber method Absorbent: Sodium hydroxide solution (O. i mol/ 1 ) Absorbent volume: 35 ml Standard sampling volume: 20 1 (1.5 to 180) 0.2 to 35 (0.7 to 125) Ipplicable con- lition In accordance
15、with 6 . 1 . 1 In accordance with 6.2.1 Expression for hydrogen bromide (HBr). “ N ” in mgHBr/m3N is the first letter of Normal and express the standard state ( O “C, 101.32 Pa). Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wi
16、ng, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 K 0085 : 1998 4 Sampling method of gas The sampling of gas shall be as follows : Sampling position of gas : Sampling position of gas for analysis shall be selected the point whe
17、re the typical gas is collected, for example the point of homogeneous flow rate of gas. 4 . 1 Reagents and preparation of reagent solution 4 . 1 . 1 Reagent (1) Water Grade A2 specified in JIS K 0557. (2) Sodium hydroxide Specified in JIS K 8576. 4 . 1 . 2 Preparation of reagent solution (1) Absorbe
18、nt solution Solution dissolved 0.4 g of sodium hydroxide in water and di- luted to 100 ml. 4.2 Device and apparatus (1) Absorption bottle Bottle which has 100 ml of volume and is shown in Fig. 1 as an example shall be used. (2) Sampling apparatus The apparatus shall be constructed as shown in Fig. 2
19、 and provided with the following conditions. (2.1) The sampling tube (A) made of such material that it is not corroded by corrosive gas in flue gas, for example glass tube, quartz glass tube or tetra fluoride ethyle- ne resin tube shall be used= (2.2) In order to prevent against mixing-in of dust in
20、 flue gas, appropriate materials such as silica wool, alkali glass wool, etc. shall be put into the end part (B) of gas sampling tube (A) as a filter medium. (2.3) Fearing that moisture in flue gas might become condense, the sampling tube (A) and conducting tube (C) shall be heated at approx. 120 “c
21、. (2.4) The piping of the sampling-tube (A) and conducting tube (C) shall be shortened as possible and able to wash the inside of them. 4 . 3 Procedure of gas sampling The sampling of gas shall be as follows. The symbols of the apparatus shown in the following sentences are according to ones in Fig.
22、 2. (1) Take 35 ml of the absorbent into a absorption bottle (Q. I (2) After turning the changeable three way stopcock (El, E (1) Analytical results (2) Classification of analytical method (3) Sampling date of sample gas (4) Items required except the foregoings Copyright Japanese Standards Associati
23、on Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS K 0085-ENGL 1798 = 4933bUb 1551758 254 Sl 11 K 0085 : 1998 7.2 Method of determination f
24、or the analytical result in flue gas shall be carried out twice with using the same sample solution for each sampling of gas, calculate the average value of them and round off to two significant figures. However, when sampling is carried out twice or more contineously, obtain all average values of e
25、ach measurement value. The determination . 1 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,- - _ - STD-JIS
26、 K 0085-ENGL 1998 m 4933b08 0551759 190 D 12. K 0085 : 1998 Attached Table 1 Normative references JIS K 0050 JIS K 0095 JIS K 0115 JIS K 0557 JIS K 8001 JIS K 8180 JIS K 8247 JIS K 8267 JIS K 8355 JIS K 8459 JIS K 8506 JIS K 8541 JIS K 8576 JIS K 8637 JIS K 8659 JIS K 8891 JIS K 8913 JIS K 8951 JIS
27、K 8982 JIS K 9009 JIS K 9519 JIS Z 8808 General rules for chemical analysis Methods for sampling of flue gas General rules for molecular absorptiometric analysis Water used for chemical analysis General rule for test methods of reagents Hydrochloric acid Potassium permanganate Sodium forma te Acetic
28、 acid Carbon tetra chloride Po tassi um bromide Nitric acid Sodi um hydroxide Sodium thiosulfate pentahydrate Starch, soluble Methanol Potassium iodide Sulfuric acid Ammonium iron (L) sulfate 12 water Sodium dihydrogenphospha te dihydrate Mercury (Ll) thiocyanate Methods of measuring dust concentrat
29、ion in flue gas Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS K 0085-ENGL 1998 m Lt933b08 05517b
30、0 902 Errata for JIS (English edition) are printed in Standardization Journal, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly Informafion. Errata will be provided upon request, please contact: Standardization Promotion De
31、partment, fapanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/14/2007 08:21:16 MDTNo reproduction or networking permitted without license from IHS -,-,-