《BS-ISO-7760-2001.pdf》由会员分享，可在线阅读，更多相关《BS-ISO-7760-2001.pdf（18页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS ISO 7760:2001 Photography Processing waste Determination of hydroquinone ICS 13.030.30; 37.040.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS I
2、SO 7760:2001 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 27 March 2002 BSI 27 March 2002 ISBN 0 580 39226 0 National for
3、eword This British Standard reproduces verbatim ISO 7760:2001 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CPW/42, Photography, which has the responsibility to: A list of organizations represented on this committee can be
4、 obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Fi
5、nd” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from lega
6、l obligations. aid enquirers to understand the text; present to the responsible international committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of
7、pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to v, a blank page, pages 1 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication
8、 Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 7760:2001(E) INTERNATIONAL STANDARD ISO 7760 Second edition 2001-12-15 Photography Processing waste Determination of hydroquinone Photographie Efflue
9、nts de traitements Dosage de lhydroquinone Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) lcsid FDParemi ihTs PDF file mac ytnoaie nmt deddebyfepca.se In ccaocnadrw eith Aebods licsneilop gnic,y this file mairp eb yntiv ro
10、deewb detu slahl ton ide ebtlnu desse tt ehyfepacse whice era hml era deddebicsnede to i dnanstlaled t noeh comtupfrep reomrign tide ehti.gn In wodnlidaogn this file, trapies ccatpe tiereht nsnopser ehibility fo ton infriignA gnebods licnesilop gnic.y I ehTStneC Oarl Secrteiraat cacepts l oniibality
11、 in this .aera Ai ebods a tredamafo kr Aebod SystemI sncotaropr.de teDails fo ts ehoftwaorp ercudts ust deo crtaet ehis PDF file ceb na fi dnuon tlareneG eh Info leratit evo tf ehile; tP ehD-Fcrtaeiarap nomtesre were tpoimizf deoirp rnti.gn Evyre casah er t neebakt neo snet eruhat tf ehile is suitlb
12、af eosu rI yb eSO memidob rebse. In the lnuikletneve y ttah alborp emler ati gnto it is fnuo,dlp saee inform ttneC ehlar Secrteiraat at tsserdda ehig leb nevwo. I S1002 O Athgir lls serevr.de selnUs towrehise specfi,dei trap on fo this ilbupctanoi may cudorper ebtu ro deziliyna ni de fomr yb ro nam
13、y,snae lecetrinoc m roecinahcal, inclidutohp gnocpoiym dna gnicrfoilm, wittuoh repmissii non writif gnrom ietreh ISa Ot tserdda ehs lebwo I roSOs membre ydob in teh ctnuoo yrf ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC02 av leT. + 22 14 11 10 947 xaF 74 90 947 22 14 + E-mail ci
14、rypothgiso.ch Web ww.wiso.ch Prnietdni wS ztierland ii Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) iii Contents Page Foreword.iv Introduction.v 1 Scope1 2 Normative references1 3 Principle1 4 Reactions2 5 Safety and oper
15、ational precautions.2 6 Materials and reagents3 7 Apparatus.5 8 Sampling and sample preparation.5 9 Procedure.6 10 Expression of results6 11 Test report7 Bibliography8 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) iv Forew
16、ord ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a techni
17、cal committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of e
18、lectrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requir
19、es approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standar
20、d ISO 7760 was prepared by Technical Committee ISO/TC 42, Photography. This second edition cancels and replaces the first edition (ISO 7760:1986), of which it constitutes a technical revision. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
21、ISO 7760:2001(E) v Introduction This International Standard is one of a series devoted to the analysis of photographic wastes; it encompasses the field of analysis of the hydroquinone content in a photographic effluent. This International Standard is intended for use by individuals with a working kn
22、owledge of analytical techniques. Some of the procedures use caustic, toxic, or otherwise hazardous chemicals. Safe laboratory practice for the handling of chemicals requires the use of safety glasses or goggles and, in some cases, other protective apparel such as rubber gloves, face masks, or apron
23、s. Normal precautions for the safe performance of any chemical procedure must be exercised at all times, but specific details have been provided for hazardous materials. Hazard warnings are designated by a letter enclosed in angle brackets “. These are defined in clause 5 and then used throughout th
24、e text. More detailed information on hazards, handling, and use of these chemicals may be available from the manufacturer. Photographic laboratories can establish conformity to effluent regulations only by chemical analysis. If this cannot be done in-house, an outside laboratory should be used. Lice
25、nsed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTERNATIONAL STANDARD ISO 7760:2001(E) I SO 1002 All irthgs ersedevr 1 Photography Proces
26、sing waste Determination of hydroquinone 1 Scope This International Standard specifies a spectrophotometric method for the determination of hydroquinone in photographic processing waste. This method can be applied to samples containing hydroquinone in the concentration range of 200 g/l to 4 000 g/l;
27、 aminophenols and phenylenediamines should also be determined by this method. However, sulfonated hydroquinones or products from the further oxidation of benzoquinone will not be determined. 2 Normative references The following normative documents contain provisions which, through reference in this
28、text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most
29、recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 648:1977, Laboratory glassware One-mark pipettetes. ISO 1042
30、:1998, Laboratory glassware One-mark volumetric flasks. ISO 5667-1:1980, Water quality Sampling Part 1: Guidance on the design of sampling programmes. ISO 5667-2:1991, Water quality Sampling Part 2: Guidance on sampling techniques. ISO 5667-3:1994, Water quality Sampling Part 3: Guidance on the pres
31、ervation and handling of samples. ISO 6353-1:1982, Reagents for chemical analysis Part 1: General test methods. ISO 6353-2:1983, Reagents for chemical analysis Part 2: Specifications First series. ISO 6353-3:1987, Reagents for chemical analysis Part 3: Specifications Second series. ISO 10349-1:1992,
32、 Photography Photographic-grade chemicals Test methods Part 1: General. 3 Principle The hydroquinone (together with some other organic compounds) is extracted at a slightly acidic pH from the aqueous sample with 1-pentanol. The extracted hydroquinone is then reacted under alkaline conditions with 1-
33、ethylquinaldinium iodide solution. The absorbance of the coloured complex that is formed is then measured. 1 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) 2 ISO 1002 Allir thgser se devr 4 Reactions 5 Safety and operationa
34、l precautions 5.1 Hazard warnings Some of the chemicals specified in the test procedures are caustic, toxic or otherwise hazardous. Safe laboratory practice for the handling of chemicals requires the use of safety glasses or goggles and, in some cases, other protective apparel such as rubber gloves,
35、 face masks, and aprons. Specific danger notices are given in the text and footnotes for particularly dangerous materials, but normal precautions are required during the performance of any chemical procedure at all times. The first time that a hazardous material is noted in the test procedures, the
36、hazard will be indicated by the word “DANGER“ followed by a symbol consisting of angle brackets “ “ containing a letter that designates the specific hazard. A double bracket “ “ will be used for particularly perilous situations. In subsequent statements involving handling of these hazardous material
37、s, only the hazard symbol consisting of the brackets and letter(s) will be displayed. Furthermore, for a given material, the hazard symbols will be used only once in a single paragraph. Hazard warning symbols will not be used for common organic solvents when used in quantities of less than 1 litre,
38、unless they are particularly hazardous. 2 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) I SO 1002 All irthgs ersedevr 3 Detailed warnings for handling chemicals and their diluted solutions are beyond the scope of this Inte
39、rnational Standard. Employers shall provide training and health and safety information in conformance with legal requirements. The hazard code system used in this International Standard is intended to provide information to the users and is not meant for compliance with any legal requirements for la
40、belling, as these vary from country to country. It is strongly recommended that anyone using these chemicals obtain pertinent information from the manufacturer about the hazards, handling, use and disposal of these chemicals. 5.2 Hazard information code system B Harmful if inhaled. Avoid breathing d
41、ust, vapour, mist or gas. Use only with adequate ventilation. C Harmful if contact occurs. Avoid contact with eyes, skin or clothing. Wash thoroughly after handling. F Will burn. Keep away from heat, sparks and open flame. Use with adequate ventilation. O Oxidizer. Contact with other material may ca
42、use fire. Do not store near combustible materials. S Harmful if swallowed. Wash thoroughly after handling. If swallowed, obtain medical attention immediately. S May be fatal if swallowed. If swallowed, obtain medical attention immediately. 5.3 Safety precautions ALL PIPETTE OPERATIONS SHALL BE PERFO
43、RMED WITH A PIPETTE BULB OR PLUNGER PIPETTE. THIS IS A CRITICAL SAFETY WARNING! Safety glasses shall be worn for all laboratory work. 6 Materials and reagents 6.1 General 6.1.1 Handling and labelling Reagents shall be handled in conformity with health and safety precautions as shown on containers or
44、 as given in other sources of such information. Proper labelling of prepared reagents includes chemical name, date of preparation, expiration date, restandardization date, name of preparer, and adequate health and safety precautions. The discharge of reagents shall conform to applicable environmenta
45、l regulations. 6.1.2 Purity Reagents used in the test procedures shall be certified reagent-grade chemicals and shall meet appropriate standards or be chemicals of a purity acceptable for the analysis. For details, see ISO 6353-1, ISO 6353-2 and ISO 6353-3. 6.1.3 Water Whenever water is specified wi
46、thout other qualifiers in the test procedures, only distilled water or water of equivalent purity shall be used. 3 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 26 03:23:25 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 7760:2001(E) 4 ISO 1002 Allir thgser se devr 6.1.4 Strength of solutions 6
47、.1.4.1 Acids and ammonium hydroxide are full strength unless otherwise specified. 6.1.4.2 When a standardized solution is required, its amount-of-substance concentration is expressed in moles per litre. The number of significant figures to which the molarity is known shall be sufficient to ensure th
48、at the reagent does not limit the reliability of the test method. 6.1.4.3 When a standardized solution is not required, its concentration is expressed in grams per litre (g/l) to the appropriate number of significant figures. 6.1.4.4 When a solution is to be diluted, its dilution is indicated by x +
49、 y, meaning that x volumes of reagent, or concentrated solution, are to be diluted with y volumes of water (6.1.3). 6.2 Reagents 6.2.1 Sodium hydroxide solution, c(NaOH) 1 mol/l. Dissolve 20,0 g of sodium hydroxide (DANGER: C) in 400 ml of water. Cool, then transfer to a 500 ml one-mark volumetric flask and dilute to the mark with water. 6.2.2 Sodium hydroxide solution, c(NaOH) 0,25 mol/l. Dilute 50 ml of the 1 mol/l sodium hydroxide (6.2.1) to 200 ml in a 200 ml one-mark volum