????:1??????????????:????

2?92?95???

3??????????

4?????????

5???????

???????????,“???”“?????????????”????????????????????????????????

11??????????21??????,“?????????”???????????????,??????,11????????????18??????????????????“???????????????????”??????3920%?

???????????????,?????????????????????,???????????,2025?????,??????????,???????????

?????“?????????????”

“?????????????????”???

???,?????,??????????????,????????????

??????,??????????????????????,??????«??»??«GB/T8939-2018??????????(?????????????????????)»???,??pH????????????;??????GB15979«??»??????

«?»?,????,???????????????????????????????????????

?«GB/T8939-2018??(????????????)»??????????????,??“±4%”????,???,??????????????????????????????????,?????????????????,??????????????“????”?

??????????pH?????,?4.0~9.0???????????,?,??????????????????????????????????????????????,pH??4.0~9.0??????????pH???4.0~8.5,??????????????4.0~7.5????,???????,??????????????pH????????

“????????? ”“???????????,??C?????????”??,?????????????“??”?,?,??“??”???????

?«?????????????»,????????????

«T/NAHIEM 003-2017????????????(??????)»???2017????????????????10????????18??????????,????????????????????“???????”????????«?»????

11?????21?,“?”???????????????,“????”??

??????

???????????“????”

?????????????«??»??????????????????????,???????????????,??,??????????????????“?????????????”?????????????????????,???????????“????”???????,??????????????????“????”????????,?????????????,??16??????1?????????????,????????????,????????????????,??????,?????????

??????????“?????”??,?????“?????”,?“????????????”?

11?????22???????,???????????,«????????????????(??????)»?????????“?”???????????“????????????”,?“?????”?

???????????,?,???????“??”,????,????????«????????????»?????????????????????????????????????????????

?,??????????,????????????,??“???????”???????????????2017???,????????????????????,?????????????????,?????????????“????”??,??????

?

????????

???????????,???2025?????????????????

11???21???????,“??”????????????????????????,?????20241954-T-607??????????«???????????????(?????????????)»???????????????????,??????????2024??????6??28??,?????????16?????

21?????????,??,????????????“??,???????????????????????,?????????????????????????,??,???????????????????????????”??,????????,???????,“??????????,????????????”

?????????????????,2024????6??25?,??(???????????????)?????2024???12?????,??????????????GB15979-2024«??????????????????????»?GB15979-2002«??????????»,??????????2025???7??????1????????

????,?????,???????????????,2025?????,«??????????(?)»?????,???????????,????????????,????2025??,???

?????????????? ??? ???? ???????:???????