1、BSI Standards PublicationBS EN 15039:2014Chemicals used for treatmentof water intended forhuman consumption Antiscalants for membranes Polycarboxilic acids and saltsBS EN 15039:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15039:2014. Itsupersedes BS EN 1
2、5039:2006 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee CII/59, Chemicals for drinking water treatment.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all th
3、e necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82882 9ICS 71.100.80Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standar
4、d was published under the authority of theStandards Policy and Strategy Committee on 31 March 2014.Amendments issued since publicationDate Text affectedBS EN 15039:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15039 March 2014 ICS 71.100.80 Supersedes EN 15039:2006English Version Chemical
5、s used for treatment of water intended for human consumption - Antiscalants for membranes - Polycarboxilic acids and salts Produits chimiques pour le traitement de leau destine la consommation humaine - Produits antitartre pour membranes - Acides polycarboxyliques et sels Produkte zur Aufbereitung v
6、on Wasser fr den menschlichen Gebrauch - Antiscalants fr Membranen - Polycarbonsuren und deren Salze This European Standard was approved by CEN on 5 January 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar
7、d the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,
8、French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulga
9、ria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tur
10、key and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
11、Ref. No. EN 15039:2014 EBS EN 15039:2014EN 15039:2014 (E) 2 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references 5 3 Description . 5 3.1 Identification . 5 3.2 Commercial forms . 8 3.3 Physical properties 8 3.4 Chemical properties 9 4 Purity criteria 9 4.1 General 9 4.2 Composi
12、tion of commercial product . 9 4.3 Impurities and main by-products . 9 4.4 Chemical parameters 9 5 Test methods 10 5.1 Sampling . 10 5.2 Analyses . 11 6 Labelling - Transportation - Storage 15 6.1 Means of delivery . 15 6.2 Risk and safety labelling according to the EU legislation . 15 6.3 Transport
13、ation regulations and labelling 15 6.4 Marking . 15 6.5 Storage 15 Annex A (informative) General information on polycarboxylic acids and salts . 17 A.1 Origin 17 A.2 Use 17 A.3 General rules relating to safety 18 Annex B (normative) Analytical methods for polycarboxylic acids and salts 19 B.1 Determ
14、ination of dry solid 19 B.2 Determination of acrylic acid 20 B.3 Assessment of product quality 23 Annex C (informative) Environmental, health and safety precautions within chemical laboratory 24 Bibliography 25 BS EN 15039:2014EN 15039:2014 (E) 3 Foreword This document (EN 15039:2014) has been prepa
15、red by Technical Committee CEN/TC 164 “Water supply”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2014 and conflicting national standards s
16、hall be withdrawn at the latest by September 2014. This document supersedes EN 15039:2006. Significant technical differences between this edition and EN 15039:2006 are as follows: replacement of warning and safety precautions notes by labelling according to REGULATION (EC) No 1272/2008. According to
17、 the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece
18、, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 15039:2014EN 15039:2014 (E) 4 Introduction In respect of potential adverse effects on the qua
19、lity of water intended for human consumption, caused by the products covered by this European Standard: a) this European Standard provides no information as to whether the products may be used without restriction in any of the Member States of the EU or EFTA; b) it should be noted that, while awaiti
20、ng the adoption of verifiable European criteria, existing national regulations concerning the use and/or the characteristics of these products remain in force. NOTE Conformity with this European Standard does not confer or imply acceptance or approval of the products in any of the Member States of t
21、he EU or EFTA. The use of the products covered by this European Standard is subject to regulation or control by National Authorities. BS EN 15039:2014EN 15039:2014 (E) 5 1 Scope This European Standard is applicable to polycarboxylic acids and salts used as antiscalants for membranes for the treatmen
22、t of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for polycarboxylic acids and salts. It gives information on their use as antiscalants for membranes in water treatment. 2 Normative references The follo
23、wing documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN ISO 3696, Wat
24、er for analytical laboratory use - Specification and test methods (ISO 3696) EN ISO 5961, Water quality - Determination of cadmium by atomic absorption spectrometry (ISO 5961) EN ISO 11885, Water quality - Determination of selected elements by inductively coupled plasma optical emission spectrometry
25、 (ICP-OES) (ISO 11885) EN ISO 11969, Water quality - Determination of arsenic - Atomic absorption spectrometric method (hydride technique) (ISO 11969) EN ISO 12846, Water quality - Determination of mercury - Method using atomic absorption spectrometry (AAS) with and without enrichment (ISO 12846) IS
26、O 3165, Sampling of chemical products for industrial use Safety in sampling ISO 6206, Chemical products for industrial use Sampling Vocabulary ISO 6703-1, Water quality Determination of cyanide Part 1: Determination of total cyanide ISO 8213, Chemical products for industrial use Sampling techniques
27、Solid chemical products in the form of particles varying from powders to coarse lumps ISO 8288:1986, Water quality Determination of cobalt, nickel, copper, zinc, cadmium and lead Flame atomic absorption spectrometric methods ISO 9174, Water quality Determination of chromium Atomic absorption spectro
28、metric methods ISO 9965, Water quality Determination of selenium Atomic absorption spectrometric method (hydride technique) 3 Description 3.1 Identification 3.1.1 Chemical name Homopolymers: a) polyacrylic acid; b) polymethacrylic acid; BS EN 15039:2014EN 15039:2014 (E) 6 c) polymaleic acid; d) poly
29、aspartic acid. These acids can also be used as sodium, potassium, and ammonium salts. Copolymers of acrylic acid, methacrylic acid, maleic acid, vinylsulfonic acid, allyl sulfonic acid, methylallyl sulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid, vinyl phosphonic acid, 2-methoxyethylphos
30、phonic acid, ethyleneoxide, -olefines, acrylamide, benzene sulfonic acid, 4-(2-methyl-2-propenyl)oxy-, sodium salt, benzene sulfonic acid, 4-vinyl-, sodium salt and 1-propanesulfonic acid, 2-hydroxy-3-(2-propenyloxy)-, monosodium salt. Polymers of polyetherdiamines and phosphorous acid. The acid mon
31、omers can also be used as sodium, potassium, and ammonium salts. 3.1.2 Synonym or common names Nil. 3.1.3 Relative molecular mass 18 M/cm) B.2.2.3 Acrylic acid monomer (min. mass fraction 99 %) B.2.2.4 Sulfuric acid, mass fraction 96 %, density = 1,84 g/ml B.2.2.5 Phosphoric acid, mass fraction 88 %
32、, density = 1,75 g/ml B.2.2.6 Helium gas, high purity B.2.2.7 Eluent Dissolve 26,04 g of sulfuric acid (B.2.2.4) with 250 ml of water (B.2.2.2). Mix 3,33 ml of this diluted sulfuric acid with 1 000 ml of water. Degas by use of an ultrasonic bath or by passing helium through the solution. B.2.2.8 Acr
33、ylic acid stock solution (200 mg/l) Weigh, to the nearest 0,001 g, 20 mg of acrylic acid (B.2.2.3.) and dissolve with water into a 200 ml one-mark volumetric flask. Make up to the mark with water (B.2.2.2) and mix. B.2.3 Apparatus Ordinary laboratory apparatus and glassware together with the followi
34、ng: B.2.3.1 For extraction B.2.3.1.1 Balance, with an accuracy of 0,1 mg B.2.3.1.2 Laboratory stirrer B.2.3.1.3 Measuring cylinders B.2.3.1.4 Syringes, 2 ml capacity B.2.3.1.5 Disposable syringe filters, 25 mm diameter, fitted with cellulose/mixture ester-membrane, pore size 0,45 m. B.2.3.2 For anal
35、yses B.2.3.2.1 High-performance liquid chromatograph fitted with a constant flow solvent delivery system, a HPLC pump, a sample injection valve, a variable wavelength ultraviolet spectrometric detector, a computer/integrator with software (PC with HP ChemStation). Use a column of 300 mm length and 7
36、,8 mm internal diameter with packaging for example (Knauer Eurokat-H 10 m).7)B.2.3.2.2 Volumetric flasks B.2.3.2.3 Microlitre syringe B.2.4 Procedure B.2.4.1 Preparation of test solution Weigh, to the nearest 0,001 g, 0,5 g of the sample in a 100 ml volumetric flask. Dissolve the test sample with 50
37、 ml of ultrapure water (B.2.2.2) and acidify with two droplets of phosphoric acid (B.2.2.5). Make up to the mark with 7)Knauer Eurokat-H 10 m is the trade name of a product supplied by Knauer. This information is given for the convenience of users of this document and does not constitute an endorsem
38、ent by CEN of the product named. Equivalent products may be used if they can be shown to lead to the same results. BS EN 15039:2014EN 15039:2014 (E) 22 water and mix. Take 2 ml of the well mixed test solution with a syringe and filter through a syringe filter (B.2.3.1.5). The filtrate is ready for t
39、he HPLC analysis. The procedure assumes that the detector response is a linear function of concentration but linearity shall first be established by the operator by means of a calibration graph. B.2.4.2 Chromatographic conditions Detection limit : 0,017 mg/kg Quantification limit : 0,054 mg/kg Lowes
40、t concentration: 0,019 mg/kg of acrylic acid Highest concentration: 12,59 mg/kg of acrylic acid. In accordance with these chromatographic conditions Table B.1 gives the data obtained. Table B.1 Values of peak areas in relation to acrylic acid content Concentration mg/kg Peak area 0,019 7,619 0,044 1
41、5,291 0,052 17,882 0,080 26,404 0,086 27,564 0,112 36,056 0,133 43,260 0,248 76,922 0,499 153,117 1,17 370,807 2,51 800,973 5,02 1602,093 7,65 2430,687 10,19 3258,458 12,59 4028,242 B.2.4.3 Calibration Dilute the stock solution (B.2.2.8) with different amounts of water (B.2.2.2), so that the resulti
42、ng solutions have concentrations between 0,00 mg/kg and 5,0 mg/kg of acrylic acid. B.2.4.4 Determination Analyse the filtrate of the test solution, the calibration solution and the blank solution (calibration 0). B.2.5 Expression of results The residual acrylic acid monomer content, w5, expressed in
43、 mg/kg of the dry antiscalant product is given by the Formula (B.2) TB5SB()()A A cVwAA m =(B.2) BS EN 15039:2014EN 15039:2014 (E) 23 where ATis the peak area of the test solution; ABis the peak area of the blank solution; ASis the peak area of the calibration solution; c is the concentration of the
44、calibration solution, in mg/l; m is the mass, in g, of the test sample; V is the volume of solution, in ml. B.2.6 Precision The absolute difference between two single test results, obtained under repeatability conditions (see NOTE), shall not be greater than the repeatability limit, r, in more than
45、1 in 20 cases as calculated from the following equation : 0,05 rz= where z is the mean of the two results, expressed in percentage mass fraction. NOTE Repeatability conditions are where mutually independent test results are obtained with the same method on identical test material in the same laborat
46、ory by the same operator using the same equipment within short intervals of time. B.3 Assessment of product quality If additional requirements are agreed between the customer and the manufacturer/supplier, the latter shall provide the necessary test methods, if requested, so that the customer can ca
47、rry out his own quality checks. A certificate of analysis shall be provided by the manufacturer/supplier, if requested. NOTE A number of physical/chemical measurements can be used by manufacturers to ensure the consistent quality of products delivered to customers. For example, solution viscosity is
48、 commonly measured, this being done under strictly controlled conditions. The viscosity value obtained provides a reliable indication of relative molecular mass when comparing batches of a particular product, but has no significance in absolute terms, since it is highly dependent on the composition
49、of the product, the solution preparation procedure, the measuring device and test conditions used. Other tests which can be carried out include determination of ionic charge and infrared spectroscopic analysis, depending on the product and manufacturer/supplier. BS EN 15039:2014EN 15039:2014 (E) 24 Annex C (informative) Environmental, health and safety precautions within chemical laboratory When preparing the analytical methods for application of this document, consideration was given to the minimisation of environmental impacts c
