GBT 12007.2-1989 环氧树脂钠离子测定方法.pdf

?????????????ú?ú??±ê×? GB/T 12007.2—1989 ?·???÷??????×????¨·?·¨ Epoxide resins??Determination of sodiumion 1989-12-25·??? 1990-11-01?? ?ú???????à???? ·??? ?????????????ú?ú??±ê×? ?·???÷??????×????¨·?·¨ GB/T 12007.2??1989 Epoxide resins??Determination of sodiumion 1 ?÷????????????·??§ ±?±ê×????¨????????×??¨???????¨?·???÷????????????????×???????·?·¨?? ±?±ê×?????????·?A???·???÷????????×??????????¨?? 2 ???? 2.1 ????×?????????(pNa)????????????????×??????????????ò????×???????????????±í???? ???? ()cac a p · = · - =1 log log Na (1) ???? a????????×??????????? c????????×??¨????mol??L?? ?±????????×??¨?????????±?????????????ü????1????°????????¨?????????????????? cc p1 log log Na= - = (2) 2.2 pNa4?¨?????????±????????×??¨????0.0001 mol??L?±??pNa=4????pNa4????????×÷???????¨?? ±ê×???????????pNa4?¨???????? 3 ·?·¨?á?? ???ù???????????????×±?-?·?????ì??????????????????·????????ó??????×??¨???????¨???????? ????????×??¨???? 4 ???? ·???·?·¨??????????·??????????? 4.1 ????×???????????????1.0?10 S??m???ò?????????????????? 4.2 ???×±??? 4.3 ?·?????? 4.4 ??????±?(GB 630)?? 4.5 ??????(GB 1253)?? 4.6 ±???(GB 686)?? 4.7 95???????ò????????(GB 679?òGB 678)?? ?ú???????à?ì??1989-12-25?ú×? 1990-11-01?? GB/T 12007.2??1989 5 ???????? 5.1 ??????±?±????????? ??500ml????????????????42 g??8???á?§??????????±?[Ba(OH) 2·8H 2O]??????196 g????×????? °?????·ú??????????°è×?·?????????????????????°è?÷?????????ê?????????????ó?????á?§?????????? ????????120 ml????×???·??à???????á?§??????????196 g????×???????????°è???ê?????????????? °è×?????????????????·???????????·?×°????????????????25 ml?ò50 ml???????????????? 5.2 c(NaCl)??0.0001 mol??L??????±ê×????? ????0.1170 g(×??·??0.0001 g)??105 ???????????????ù×?????????????2 L????????????????2 kg ????×?????????0.001 mol/L ???????????????ó°?????·¨????????10±???????0.0001 mol??L??????±ê ×???????????pNa4?¨???????? 6 ???÷ 6.1 ????×??¨??????????????×?????????????????±??????? 6.2 ????????±???100 ml?? 6.3 ??????????????500 ml????500 ml????????°???????×°?????? ???????????? 1-??????????2-??????3-?????è??????????4-????·ú???????? 5 4?fmm??5-???????× 6.4 ??????????50??500??2000 ml?? 6.5 ????????10??20ml?? 6.6 ??????????°è?÷????????????·ú??????????°è×??? 6.7 ·????ì????????0.0001 g?? 6.8 ?????ì????????0.5 g?? 7 ???ù ?ù???·???÷??????????×??????????????ù????????±í1?? GB/T 12007.2??1989 ±í1 ????×???????ppm ???ù????g ????×???????ppm ???ù????g 0??50 51??100 5??10 2??5 101??500 1??2 8 ???é·?·¨ 8.1 ???é×?±? 8.1.1 °????÷???????ó???í???????? 8.1.2 °???????×??¨???????????÷?é???÷?????÷???????¨???? 8.1.3 ??5???????á???????????é???????????????÷?ó????15??20 min????×????????????????????ó?? ????×?????????????±?????±????±?????÷?????ú????×????????????¨??????°×??±????????ì?é?÷?ó??·? ·??????ó?? 8.2 ???é???è 8.2.1 ????1??10 g???ù??×??·??0.0001 g??????????????????????????20 ml 1??1(????)?????×±?-?· ?????ì????????°?????·ú??????????°è×?·???????????????????????????°è?÷????°è?????ù?ê???????? ±????±????????????????????????????60???? 8.2.2 ????100??150 g????×????????????????°??????????????×??·??0.5 g??????G 1????????°è10 min ?ó???????????????????·??????????·????? 8.2.3 °?????????·???100 ml????????±???????????±???????·??????????à???????????????ó?????? ?????°??????????????×??·??0.5 g??????G 2???? 1??G 2????????????????????????????????m l???? 8.2.4 ????????±?±??????????÷????±???????????pH????10????????°???5??6???? 8.2.5 ???????????????¨????????×??¨???????¨????????????????×??¨????????C Na1+ ?? 8.2.6 ???¨????×?????????×??¨????????????°×????????C b?? 8.2.7 °?8.2.2??8.2.5??????????????×÷?? ·?±??????÷????????????m 2?? m 3???????°??????×??¨?? ?? Na??+ ???? Na??+ ?????????±????????????????×??¨?????????????? 8.2.8 ???¨????????????m