I-silicon dioxide, eyaziwa kakhulu ngokuthi i-E 551, isetshenziswa kabanzi njenge-ejenti yokuvimbela ukuminyana emikhiqizweni yokudla ehlukahlukene ukuze kuvinjelwe ukuminyana futhi kuqinisekiswe izimpuphu ezihamba kalula. Lesi sengezo sinesibopho esibalulekile ekugcineni ikhwalithi yomkhiqizo kanye nokwaneliseka kwabathengi ngokuthuthukisa ukuthungwa neshalofu. Iphrofayili yayo yokuphepha ihlolwe kabanzi yiziphathimandla zokuphepha kokudla emhlabeni wonke, iqinisekisa ukuphepha kwayo ngokuvamile lapho isetshenziswa ngaphakathi kwemingcele elawulwayo. Ukuqonda indima nesimo sokulawula se-silicon dioxide kusiza amabhizinisi nabathengi ukuba babonge ukubaluleka kwayo embonini yokudla.

Selokhu yethulwa, i-silicon dioxide ibonwe ngezici zayo eziphumelelayo zokuvimbela ukubambana. Eminyakeni edlule, ukuhlolwa okuningi kwesayensi kuye kwahlola ukuphepha kwayo nokufaneleka kwayo ekusetshenzisweni ekudleni. Izifundo zakuqala nokubuyekezwa kwemithetho kuthole njalo ukuthi ayikho ingozi enkulu yezempilo ehambisana nokudliwa kwayo emazingeni avunyelwe. Lo mlando wokuphepha uye wenza i-E 551 yaba isengezo esithembekile emikhiqizweni yokudla ehlukahlukene okubandakanya amasobho ayimpuphu, izinongo, neziphuzo ezisheshayo.

Ikhomishini YaseYurophu isanda kubuyekeza ukuhlolwa kwezokuphepha kwe-silicon dioxide ukuze kuqinisekiswe ukuvikelwa kwabathengi njengoba idatha yesayensi ishintsha. Izimpendulo ezibuyekeziwe ziqinisekisa ukuthi i-E 551 ihlala iphephile ukusetshenziswa ngaphakathi kwemingcele emisiwe, iqinisa ukugunyazwa kwayo komthetho. Lezi zimpendulo zicabangela ukudla okudliwayo, idatha ye-toxicological, kanye nezindlela zakamuva zokuhlaziya, ziqinisekisa ukuthi isengezo sihlangabezana namazinga esesimanje ezokuphepha kokudla.

Izibuyekezo zakamuva zigcizelela ukuthuthukiswa kwezincazelo ze-silicon dioxide, okuhlanganisa nemibandela yokuhlanzeka nemikhawulo ezintweni ezinobuthi ezifana namatshe asindayo. Lezi ngcono zihlose ukuthuthukisa ukuphepha kwezinto kanye nekhwalithi. Abakhiqizi bayakhuthazwa ukuthi bahambisane ngokuqinile nalezi zincazelo ukuze kugcinwe ukwethembeka kwabathengi kanye nokuhambisana nemithetho. Amabhizinisi aphatha i-silicon dioxide esezingeni lokudla angazuza ngokubambisana nabathengisi abahlonishwayo abalandela le mibandela ethuthukisiwe.

Uhlolojwa kwezingozi ze-silicon dioxide kuhilela izindlela ezinemininingwane ezihlanganisa izibalo ze-Margin of Exposure (MOE) kanye nokuhlaziywa kokudla okudliwayo kuzo zonke izigaba zabantu ezahlukene. Lokhu kuhlolwa kuqinisekisa ingozi ephansi ehambisana ne-E 551 uma isetshenziswa ngendlela efanele. Kunikezwa ukunakwa okukhethekile kubantu abasengozini njengabantwana kanye nabantu abanezinto ezithile zokudla ukuze kuqinisekiswe ukuphepha kwawo wonke umuntu. Ukuqapha okuqhubekayo nokubuyekezwa kwesayensi kuyingxenye ebalulekile yokugcina lezi ziqinisekiso zokuphepha.

Ngezimpumelelo zobuchwepheshe bezinto ezincane kakhulu, ubukhona bezinhlayiya ezincane kakhulu ze-silicon dioxide buvuse ukuhlolwa kwezingozi ezithile. Lezi zilinganiso zigxila osayizini wezinhlayiya, ukusatshalaliswa, kanye nokusebenzisana okungenzeka kwezinto eziphilayo okuhlukile ezintweni ezincane kakhulu. Izindlela zokuchaza eziqondile zibalulekile ukuhlukanisa phakathi kwe-silicon dioxide evamile neyeyisayizi elincane kakhulu, ukuqinisekisa ukuthi ukuhlolwa kwezokuphepha kuhlala kuqinile futhi kuthembekile.

Ukuhlaziywa okunembayo kosayizi wezinhlayiya kanye nemorphology kubalulekile ukuhlola ubungozi obunembayo be-silicon dioxide, ikakhulukazi amafomu amancane kakhulu. Ngaphezu kwalokho, imikhawulo eqinile ezintweni ezinobuthi njenge-lead, i-arsenic, ne-mercury iyasetshenziswa ukuvimbela ukungcola. Lezi zinyathelo zigcizelela ukuzibophezela ekuphepheni kokudla kanye nekhwalithi, kusiza abakhiqizi ukuthi bahambisane futhi bavikele impilo yabathengi.

I-Zhongqi (Shandong) Silicon Materials Co., Ltd. igqama njengomhlinzeki omethembayo wemikhiqizo ye-silicon dioxide esezingeni eliphezulu, ezibophezele ekuphepheni, ekusunguleni izinto ezintsha, nasekuqinisweni kwemithetho. Ngezilawuli zekhwalithi eziqinile kanye nezibuyekezo eziqhubekayo ezihambisana namazinga omhlaba wokuphepha, iZhongqi iqinisekisa ukuthi i-silicon dioxide yayo esezingeni lokudla ihlangabezana namazinga aphezulu embonini. Ngemininingwane eyengeziwe mayelana nokunikezwa kwemikhiqizo yabo ebanzi kanye nobuchwepheshe benkampani, vakashela i-Mayelana Nathi ikhasi. Ukuhlola imikhiqizo ethile, sicela ubheke ku-Imikhiqizo isigaba, noma hlala unolwazi ngezindaba zakamuva zemboni ngokusebenzisa i-Izindaba ikhasi.