1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1787:2000 The Europ
2、ean Standard EN 1787:2000 has the status of a British Standard ICS 67.020; 67.050 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Foodstuffs Detection of irradiated food containing cellulose by ESR spectroscopyThis British Standard, having been prepared under the direction of
3、the Consumer Products and Services Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 October 2000 BSI 10-2000 ISBN 0 580 34589 0 BS EN 1787:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard
4、 is the official English language version of EN 1787:2000. It supersedes BS EN 1787:1997 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee AW/-/3, Food analysis - Horizontal methods, which has the responsibility to: aid enquirers to understand the text;
5、 present to the responsible European 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. A list of organizations represented on this committee can be obtaine
6、d 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 “Find” faci
7、lity 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 legal obliga
8、tions. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.(8523($167$1$5 1250(8523e(11( (8523b,6&+(1250 (1 0DUFK ,&6 6XSHUVHGH
9、V(1 (QJOLVKYHUVLRQ )RRGVWXIIVHWHFWLRQRILUUDGLDWHGIRRGFRQWDLQLQJFHOOXORVHE (65VSHFWURVFRS 3URGXLWVDOLPHQWDLUHVpWHFWLRQSDUVSHFWURVFRSLH53( GDOLPHQWVLRQLVpVFRQWHQDQWGHODFHOOXORVH /HEHQVPLWWHO(65VSHNWURVNRSLVFKHU1DFKZHLVYRQ EHVWUDKOWHQFHOOXORVHKDOWLJHQ/HEHQVPLWWHOQ 7KLV(XURSHDQ6WDQGDUGZDVDSSURYHGE&(1RQ)
10、HEUXDU &(1PHPEHUVDUHERXQGWRFRPSOZLWKWKH&(1&(1(/(&,QWHUQDO5HJXODWLRQVZKLFKVWLSXODWHWKHFRQGLWLRQVIRUJLYLQJWKLV(XURSH DQ 6WDQGDUGWKHVWDWXVRIDQDWLRQDOVWDQGDUGZLWKRXWDQDOWHUDWLRQ8SWRGDWHOLVWVDQGELEOLRJUDSKLFDOUHIHUHQFHVFRQFHUQLQJV XFKQDWLRQDO VWDQGDUGVPDEHREWDLQHGRQDSSOLFDWLRQWRWKH&HQWUDO6HFUHWDULDWRUWRD
11、Q&(1PHPEHU 7KLV(XURSHDQ6WDQGDUGHLVWVLQWKUHHRIILFLDOYHUVLRQV(QJOLVK)UHQFK*HUPDQ$YHUVLRQLQDQRWKHUODQJXDJHPDGHEWUD QVODWLRQ XQGHUWKHUHVSRQVLELOLWRID&(1PHPEHULQWRLWVRZQODQJXDJHDQGQRWLILHGWRWKH&HQWUDO6HFUHWDULDWKDVWKHVDPHVWDWXVDVW KHRIILFLDO YHUVLRQV &(1PHPEHUVDUHWKHQDWLRQDOVWDQGDUGVERGLHVRI$XVWULD%HOJLX
12、P&HFK5HSXEOLFHQPDUN)LQODQG)UDQFH*HUPDQ*UHHFH ,FHODQG,UHODQG,WDO/XHPERXUJ1HWKHUODQGV1RUZD3RUWXJDO6SDLQ6ZHGHQ6ZLWHUODQGDQG8QLWHG.LQJGRP (8523($1 &200,77( )25 67$1$5,=$7,21 &20,7e(8523e(1(1250$/,6$7,21 (8523b,6&+(6.20,7()h5125081* &HQWUDO6HFUHWDULDWUXHGH6WDVVDUW%UXVVHOV &(1 $OOULJKWVRIHSORLWDWLRQLQDQIR
13、UPDQGEDQPHDQVUHVHUYHG ZRUOGZLGHIRU&(1QDWLRQDO0HPEHUV 5HI1R(1(3DJH (1 BSI 102000 ,&(SHUWVDQGODERUDWRULHVIURP(8DQG()7$FRXQWULHVFRQWULEXWHGMRLQWOWR WKHGHYHORSPHQWRIWKLVSURWRFRO3DJH (1 BSI 102000 6FRSH 7KLV(XURSHDQ6WDQGDUGVSHFLILHVDPHWKRGIRUWKHGHWHFWLRQRIIRRGVFRQWDLQLQJFHOOXORVHZKLFKKDYHEHHQWUHDWHGZLWK
14、LRQLLQJ UDGLDWLRQ E DQDOVLQJ WKH HOHFWURQ VSLQ UHVRQDQFH (65 VSHFWUXP DOVR FDOOHG HOHFWURQ SDUDPDJQHWLF UHVRQDQFH(35VSHFWUXPRIWKHIRRGVHHWR ,QWHUODERUDWRUVWXGLHVKDYHEHHQVXFFHVVIXOOFDUULHGRXWZLWKSLVWDFKLRQXWVKHOOVWRSDSULNDSRZGHU DQGIUHVKVWUDZEHUULHV 1RUPDWLYH5HIHUHQFHV 7KLV (XURSHDQ 6WDQGDUG LQFRUSRUD
15、WHV E GDWHG RU XQGDWHG UHIHUHQFH SURYLVLRQV IURP RWKHU SXEOLFDWLRQV 7KHVH QRUPDWLYHUHIHUHQFHVDUHFLWHGDWWKHDSSURSULDWHSODFHVLQWKHWHWDQGWKHSXEOLFDWLRQVDUHOLVWHGKHUHDIWHU)RUGDWHG UHIHUHQFHVVXEVHTXHQWDPHQGPHQWVWRRUUHYLVLRQVRIDQRIWKHVHSXEOLFDWLRQVDSSOWRWKLV(XURSHDQ6WDQGDUGRQO ZKHQLQFRUSRUDWHGLQLWEDPHQGPH
16、QWRUUHYLVLRQ)RUXQGDWHGUHIHUHQFHVWKHODWHVWHGLWLRQRIWKHSXEOLFDWLRQUHIHUUHGWR DSSOLHV (1,62 :DWHUIRUDQDOWLFDOODERUDWRUXVH6SHFLILFDWLRQDQGWHVWPHWKRGV,62 3ULQFLSOH (65VSHFWURVFRSGHWHFWVSDUDPDJQHWLFFHQWUHVHJUDGLFDOV7KHDUHHLWKHUGXHWRLUUDGLDWLRQRUWRRWKHUFRPSRXQGV SUHVHQW$QLQWHQVHHWHUQDOPDJQHWLFILHOGSURGXFHV
17、DGLIIHUHQFHEHWZHHQWKHHQHUJOHYHOVRIWKHHOHFWURQVSLQV P V DQGP V OHDGLQJWRUHVRQDQFHDEVRUSWLRQRIDQDSSOLHGPLFURZDYHEHDPLQWKHVSHFWURPHWHU(65VSHFWUD DUHFRQYHQWLRQDOOGLVSODHGDVWKHILUVWGHULYDWLYHRIWKHDEVRUSWLRQZLWKUHVSHFWWRWKHDSSOLHGPDJQHWLFILHOG 7KHILHOGDQGIUHTXHQFYDOXHVGHSHQGRQWKHHSHULPHQWDODUUDQJHPHQWVVDP
18、SOHVLHDQGVDPSOHKROGHUZKLOHWKHLU UDWLRLHJYDOXH LV DQLQWULQVLFFKDUDFWHULVWLF RIWKHSDUDPDJQHWLF FHQWUHDQG LWVORFDO FRRUGLQDWLRQ )RU IXUWKHU LQIRUPDWLRQVHHWR 5DGLDWLRQWUHDWPHQWSURGXFHVUDGLFDOVZKLFKFDQEHGHWHFWHGLQVROLGDQGGUSDUWVRIWKHIRRG7KHLQWHQVLWRIWKHVLJQDO REWDLQHGLQFUHDVHVZLWKWKHFRQFHQWUDWLRQRIWKHSDU
19、DPDJQHWLFFRPSRXQGVDQGWKXVZLWKWKHDSSOLHGGRVH $SSDUDWXVDQGHTXLSPHQW 8VXDOODERUDWRUDSSDUDWXVDQGLQSDUWLFXODUWKHIROORZLQJ %DQG(65VSHFWURPHWHU LQFOXGLQJPDJQHWPLFURZDYHEULGJHFRQVROHZLWKILHOG FRQWUROOHUDQGVLJQDOFKDQQHOUHFWDQJXODURUFOLQGULFDOFDYLW (65WXEHV RILQWHUQDOGLDPHWHUDERXWPPHJ6XSUDVLO TXDUWWXEHV %DODQ
20、FH DFFXUDWHWRWKHQHDUHVWPJRSWLRQDO /DERUDWRUYDFXXPRYHQ RU IUHHHGUHU (OHFWULFEOHQGHU )LOWHUSDSHU 6FDOSHO :DWHU RIDWOHDVWJUDGHDFFRUGLQJWR(1,621)Suprasil is an example of a product available commercially. This information is given for the convenience of users of this standard and does not constitute an
21、endorsement by CEN of this product.3DJH (1 BSI 102000 3URFHGXUH 6DPSOHSUHSDUDWLRQ 6KHOOVDQGVWRQHV 5HPRYHSLHFHVRIVXLWDEOHVLHDERXWPJWRPJPPWRPPLQGLDPHWHUIURPWKHVKHOOVRUVWRQHVRIWKH IRRGHJXVLQJDVFDOSHOULQJHJLQDIUHHHGUHURUDWDSSURLPDWHO &LQDODERUDWRUYDFXXPRYHQLV XVXDOOQRWQHFHVVDULQWKHFDVHRIQXWVKHOOVEXWUHFR
22、PPHQGHGIRUSLSVDQGNHUQHOVRIIUXLWV 6SLFHV 8VHDERXWPJWRPJRIWKHVSLFHVDPSOHULQJHJLQDIUHHHGUHURUDWDSSURLPDWHO &LQDODERUDWRU YDFXXPRYHQLVXVXDOOQRWQHFHVVDU 6WUDZEHUULHV 6WUDZEHUUVDPSOHVVKRXOGEHPHDVXUHGLPPHGLDWHODIWHUUHFHLSW2WKHUZLVHVWRUHWKHVDPSOHVDWDSSURLPDWHO & XQWLODQDOVLV )RU(65PHDVXUHPHQWDERXWPJRIVHHGVD
23、FKHQHVRIVWUDZEHUULHVDUHQHHGHG7KHVHFDQEHJDLQHGXVXDOOIURP DERXWJRIVWUDZEHUULHV )RUVHSDUDWLRQRIWKHVPDOOVHHGVIURPWKHPDLQIUXLWERGHLWKHUSHHORIIWKHVNLQUHFRPPHQGDWLRQLQIURHQVWDWHRU XVHWKHZKROHIUXLWZLWKRXWVWDONVDQGOHDYHV+RPRJHQLHWKHVWUDZEHUULHVLQDQHOHFWULFEOHQGHU$GGPORI ZDWHUWRWKHIUXLWSXOSDQGVWLUWKRURXJKO$OO
24、RZWKHVHHGVWRVHWWOHDQGGHFDQWPRVWRIWKHZDWHUWRJHWKHUZLWKWKHIORDWLQJ IUXLWSXOS5HSHDWWKLVSURFHGXUHRQFHRUWZLFHWRUHPRYHDQUHPDLQLQJIUXLWSXOS 3ODFHWKHVHHGVRQILOWHUSDSHUWRUHPRYHDGKHULQJZDWHUUWKHVHHGVLQDIUHHHGUHURUDWDSSURLPDWHO &LQD ODERUDWRUYDFXXPRYHQHJIRUK RQRWJULQGWKHVHHGVVLQFHJULQGLQJZLOOGLPLQLVKWKHVLJQDOW
25、RQRLVHUDWLRDQGFDQFDXVHDFKDQJHRIWKHVKDSHRIWKH (65VSHFWUXP 6WRULQJVDPSOHVLQWKHIURHQVWDWHZLOOQRWDGYHUVHODIIHFWWKHGHWHFWLRQRIWUHDWPHQWZLWKUDGLDWLRQ (656SHFWURVFRS 6SHFWURPHWHUVHWWLQJV 8VHDWLPHFRQVWDQWDQGVZHHSUDWHDSSURSULDWHIRUDQ(65VLJQDOZLWKDSHDNWRSHDNOLQHZLGWKRIDSSURLPDWHO P7)RUHDPSOHWKHIROORZLQJ(65VSH
26、FWURPHWHUVHWWLQJVKDYHEHHQIRXQGWREHVDWLVIDFWRU 0LFURZDYHUDGLDWLRQ *+ SRZHUP:IRUSLVWDFKLRQXWVWRP:IRUSDSULNDSRZGHUDQGVWUDZ EHUULHV 0DJQHWLFILHOG P7FHQWUHILHOG VZHHSZLGWKP7 6LJQDOFKDQQHO N+RUN+PRGXODWLRQIUHTXHQF P7WRP7PRGXODWLRQDPSOLWXGH PVWRPVWLPHFRQVWDQW VZHHSUDWHP7PLQ WRP7PLQ RUDFFXPXODWLRQRI WRVSHFW
27、UDDWJUHDWHUVZHHSUDWHDQGVKRUWHUWLPHFRQVWDQW *DLQ EHWZHHQDSSURLPDWHO DQG 7HPSHUDWXUH DPELHQWWHPSHUDWXUH 7KHVHYDOXHVDUHIRUWKHVSHFLILHGPLFURZDYHIUHTXHQFDQGPDJQHWLFILHOGLIWKHIUHTXHQFLVKLJKHU ORZHUWKHPDJQHWLFILHOGVWUHQJWKZLOOEHKLJKHUORZHU3)If saturation is suspected, the microwave power should be reduced,
28、 see 10.4)These values are for the specified sweep rate.3DJH (1 BSI 102000 $QDOVLVRIVDPSOH $QDOVHWKHVDPSOHSUHSDUHGDVGHVFULEHGLQLQDQ(65WXEH (YDOXDWLRQ $VLQJOHVLJQDO&VHHILJXUHV$DQG$LVREVHUYHGLQWKH(65VSHFWUDRIDOOIRRGFRQWDLQLQJFHOOXORVHLQFOXGLQJ XQLUUDGLDWHGVDPSOHV,QWKHFDVHRILUUDGLDWHGVDPSOHVWKHLQWHQVLW
29、RIWKLVVLJQDOLVXVXDOOPXFKJUHDWHUDQGLQ DGGLWLRQDSDLURIOLQHVRFFXUVWRWKHOHIWDWORZHUILHOGDQGULJKWDWKLJKHUILHOGRIWKHFHQWUDOVLJQDO 7KLVSDLURIOLQHVLVGXHWRFHOOXORVHUDGLFDOVIRUPHGEWKHLRQLLQJUDGLDWLRQ7KHVSDFLQJRIWKLVUDGLDWLRQLQGXFHGVLJQDO SDLULVDERXWP7DQGLVVPSWRPDWLFRIUDGLDWLRQWUHDWPHQWKDYLQJWDNHQSODFHVHHILJXU
30、HV$DQG$ ,QVRPHWSHVRIIRRGEURDGOLQHVRIORZLQWHQVLWGXHWRSDUDPDJQHWLF0Q LRQVDUHREVHUYHGLQDGGLWLRQWRWKHVLJQDOV PHQWLRQHG+RZHYHUWKHLUSRVLWLRQLQWKHPDJQHWLFILHOGLVGLIIHUHQWDQGWKHVSDFLQJEHWZHHQWZRPDQJDQHVHOLQHVEHLQJ DERXWP7FRXSOLQJFRQVWDQWGLIIHUVIURPWKHVSDFLQJRIWKHLUUDGLDWLRQVSHFLILFVLJQDOV /LPLWDWLRQV HWHFWL
31、RQOLPLWVDQGVWDELOLWDUHLQIOXHQFHGEWKHFUVWDOOLQHFHOOXORVHFRQWHQWDQGWKHPRLVWXUHFRQWHQWRIWKHVDPSOHV 3RVLWLYHLGHQWLILFDWLRQRIWKHFHOOXORVHUDGLFDOVLVHYLGHQFHRILUUDGLDWLRQEXWWKHDEVHQFHRIWKLVVLJQDOGRHVQRWFRQVWLWXWH HYLGHQFHWKDWWKHVDPSOHLVXQLUUDGLDWHG HWHFWLRQRILUUDGLDWHGSLVWDFKLRQXWVKDVEHHQYDOLGDWHGIRUGRVHVR
32、IN*DQGDERYHDQGVWDELOLWLVQRWHSHFWHGWR SUHVHQWOLPLWDWLRQVIRUGHWHFWLRQRILUUDGLDWLRQIRUDWOHDVWRQHHDUDIWHUWUHDWPHQW HWHFWLRQRILUUDGLDWHGSDSULNDSRZGHUKDVEHHQYDOLGDWHGIRUGRVHVRIN*DQGDERYH6WDELOLWRIFHOOXORVHUDGLFDOVLQ SDSULNDSRZGHULVODUJHOGHSHQGHQWRQVWRUDJHFRQGLWLRQVHVSHFLDOOKXPLGLWDQGPDEHVKRUWHUWKDQWKHVKHO
33、IOLIH RIWKHSURGXFWV HWHFWLRQRILUUDGLDWHGIUHVKVWUDZEHUULHVKDVEHHQYDOLGDWHGIRUGRVHVRIN*DQGDERYHHWHFWLRQRILUUDGLDWHG EHUULHVKDVEHHQDQDOVHGIRUGRVHVRIN*DQGDERYHHWHFWLRQLVWSLFDOOOLPLWHGWRDERXWWKHILUVWZHHNVDIWHU WUHDWPHQW6WDELOLWRIFHOOXORVHUDGLFDOVLQEHUULHVGHSHQGVRQVWRUDJHFRQGLWLRQVDQGPDEHVKRUWHUWKDQWKHVKH
34、OIOLIHRI WKHSURGXFWV 9DOLGDWLRQ 7KLV(XURSHDQ6WDQGDUGLVEDVHGRQWZRLQWHUODERUDWRUWHVWVZLWKSLVWDFKLRQXWVKHOOVWRRQHLQWHUODERUDWRU WHVWZLWKSDSULNDSRZGHUDQGRQHZLWKIUHVKVWUDZEHUULHV ,QDQLQWHUODERUDWRUWHVWFDUULHGRXWEWKH&RPPXQLW%XUHDXRI5HIHUHQFH%&5ODERUDWRULHVLGHQWLILHG FRGHGVDPSOHVRISLVWDFKLRVKHOOVZKLFKZHUHH
35、LWKHUXQLUUDGLDWHGRULUUDGLDWHGWRDERXWN*N*RUN*VHHWDEOH 7DEOH,QWHUODERUDWRUGDWD 3URGXFW 1RRIVDPSOHV 1RRIIDOVHQHJDWLYHV 1RRIIDOVHSRVLWLYHV 3LVWDFKLRVKHOOV )DOVHQHJDWLYHVDUHLUUDGLDWHGVDPSOHVLGHQWLILHGDVXQLUUDGLDWHG )DOVHSRVLWLYHVDUHXQLUUDGLDWHGVDPSOHVLGHQWLILHGDVLUUDGLDWHG $IWHULPSURYHPHQWRIWKHILUVWSURWR
36、FROLQDQLQWHUODERUDWRUWHVWFDUULHGRXWEWKH*HUPDQ)HGHUDO+HDOWK2IILFH %XQGHVJHVXQGKHLWVDPW%*$ODERUDWRULHVLGHQWLILHGFRGHGVDPSOHVRISLVWDFKLRVKHOOVZKLFKZHUHHLWKHU XQLUUDGLDWHGRULUUDGLDWHGWRDERXWN*RUN*VHHWDEOH3DJH (1 BSI 102000 7DEOH,QWHUODERUDWRUGDWD 3URGXFW 1RRIVDPSOHV 1RRIIDOVHQHJDWLYHV 1RRIIDOVHSRVLWLYHV
37、 3LVWDFKLRVKHOOV )DOVHQHJDWLYHVDUHLUUDGLDWHGVDPSOHVLGHQWLILHGDVXQLUUDGLDWHG )DOVHSRVLWLYHVDUHXQLUUDGLDWHGVDPSOHVLGHQWLILHGDVLUUDGLDWHG ,QDQLQWHUODERUDWRUWHVWFDUULHGRXWEWKH%*$ODERUDWRULHVLGHQWLILHGFRGHGVDPSOHVRISDSULNDSRZGHU ZKLFKZHUHHLWKHUXQLUUDGLDWHGRULUUDGLDWHGWRDERXWN*RUN*VHHWDEOH 7DEOH,QWHUODERU
38、DWRUGDWD 3URGXFW 1RRIVDPSOHV 1RRIIDOVHQHJDWLYHV 1RRIIDOVHSRVLWLYHV 3DSULNDSRZGHU )DOVHQHJDWLYHVDUHLUUDGLDWHGVDPSOHVLGHQWLILHGDVXQLUUDGLDWHG )DOVHSRVLWLYHVDUHXQLUUDGLDWHGVDPSOHVLGHQWLILHGDVLUUDGLDWHG ,QDQLQWHUODERUDWRUWHVWFDUULHGRXWEWKH*HUPDQ)HGHUDO,QVWLWXWHIRU+HDOWK3URWHFWLRQRI&RQVXPHUVDQG 9HWHULQDU
39、0HGLFLQH%J99ODERUDWRULHVLGHQWLILHGFRGHGVDPSOHVRIIUHVKVWUDZEHUULHVZKLFKZHUHHLWKHU XQLUUDGLDWHGRULUUDGLDWHGWRDERXWN*RUN*VHHWDEOH 7DEOH,QWHUODERUDWRUGDWD 3URGXFW 1RRI VDPSOHV 1RRIIDOVH QHJDWLYHV 1RRIIDOVH SRVLWLYHV 1RRILQFRQFOXVLYH UHVXOWV 6WUDZEHUULHV )DOVHQHJDWLYHVDUHLUUDGLDWHGVDPSOHVLGHQWLILHGDVXQLU
40、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
