{"id":361661,"date":"2024-10-20T01:37:00","date_gmt":"2024-10-20T01:37:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-218632020\/"},"modified":"2024-10-26T02:30:37","modified_gmt":"2024-10-26T02:30:37","slug":"bs-iso-218632020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-218632020\/","title":{"rendered":"BS ISO 21863:2020"},"content":{"rendered":"

This document specifies a method for the determination of alkylmercury compounds in filtered water samples by gas chromatography-mass spectrometry after phenylation and solvent extraction.<\/p>\n

This method is applicable to determination of individual methylmercury (MeHg) and ethylmercury (EtHg) compounds in surface water and waste water.<\/p>\n

The method can be applied to samples containing 0,2 ?g\/l to 10 ?g\/l of each compound as mercury mass. Depending on the matrix, the method may also be applicable to higher concentrations after suitable dilution of the sample or reduction in sample size.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Principle
5 Interferences
5.1 Interferences with sampling, sample storage and sample preparation
5.2 Interferences with GC-MS
6 Reagents and standards <\/td>\n<\/tr>\n
12<\/td>\n7 Apparatus and materials <\/td>\n<\/tr>\n
13<\/td>\n8 Sample collection, preservation and storage
9 Procedure
9.1 Sample preparation
9.1.1 pH-adjustment of water sample <\/td>\n<\/tr>\n
14<\/td>\n9.1.2 Phenylation and solvent extraction
9.1.3 Dehydration of toluene extract
9.2 Preparation of samples for GC\u2011MS
9.3 Optimization of operating condition for GC\u2011MS
9.4 Identification of individual substances with GC\u2011MS <\/td>\n<\/tr>\n
15<\/td>\n9.5 Blank tests
10 Calibration
10.1 General requirements
10.2 Performance test of GC\u2011MS <\/td>\n<\/tr>\n
16<\/td>\n10.3 Calibration with internal standard
10.3.1 General requirement
10.3.2 Procedure of calibration <\/td>\n<\/tr>\n
17<\/td>\n10.4 Spike recovery test of target substances
11 Calculation
11.1 Calculation of results after calibration with internal standards <\/td>\n<\/tr>\n
18<\/td>\n11.2 Treatment of results lying outside the calibration range
11.3 Quality checks for internal standardization
12 Expression of results <\/td>\n<\/tr>\n
19<\/td>\n13 Test report <\/td>\n<\/tr>\n
20<\/td>\nAnnex A (informative) Example of operating condition of GC-MS <\/td>\n<\/tr>\n
21<\/td>\nAnnex B (informative) Examples of mass chromatograms and mass spectra of phenylated alkylmercury by GC-MS <\/td>\n<\/tr>\n
24<\/td>\nAnnex C (informative) The use of sodium tetrapropylborate as an alternative derivatizing agent[4] <\/td>\n<\/tr>\n
25<\/td>\nAnnex D (informative) The use of GC-AFS as an alternative detector <\/td>\n<\/tr>\n
28<\/td>\nAnnex E (informative) Performance data <\/td>\n<\/tr>\n
29<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Water quality. Determination of alkylmercury compounds in water. Method using gas chromatography-mass spectrometry (GC-MS) after phenylation and solvent extraction<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":361670,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[216,2641],"product_tag":[],"class_list":{"0":"post-361661","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-13-060-50","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/361661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/361670"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=361661"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=361661"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=361661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}