I-Arsenic ivela ngokwemvelo elayisi kodwa ungayifaka ngamanzi
Ilayisi ilayishwa i-arsenic futhi iyasabisa bonke abantu base-Asia abangabanikazi belayisi.
Kungani? Iyini i-arsenic? I-Arsenic iyisici samakhemikhali (khumbula itafula lamakhemikhali avela esikoleni esiphakeme? I-Arsenic yiyona efana ne- As symbol). I-Arsenic iyingxenye yemithi yendabuko yaseShayina futhi, ngesikhathi sokubusa kuka-Elizabeth I waseNgilandi, abanye besifazane (kuhlanganise nendlovukazi) basebenzisa ingxube ye-arsenic, uviniga nokuchofoza ezikhumba zabo ukuze zilulaze futhi zibuyisele izimpawu zokuguga.
Kuthathwa ngokweqile, i-arsenic ingabangela ukugula okukhulu okungaholela ekufeni. Amandla we-arsenic njengobuthi eyaziwa kusukela ekhulwini lokuqala futhi kuye kwaba yithuluzi elithandayo lokubulala ngoba izimpawu zingachazwa njengokudla okuvamile. Emlandweni, umndeni waseBorgia mhlawumbe iziboshwa ezidume kakhulu ezabulala izitha zezombangazwe nge-arsenic.
Kwenzeka Kanjani
Kodwa ngubani obeka i-arsenic elayisi? Ekekho neyodwa. I-Arsenic ivela emanzini nasemhlabathini, futhi ukutholakala kwayo kuyinto engokwemvelo. Ngakho-ke, akunakwenzeka ukuthi othile angenelele ngamabomu ukutholakala kwelayisi lomhlaba ngalesi sici esinobuthi. Eqinisweni, nakuba kubonakala sengathi irayisi idliwa yi-arsenic-in-food scares, kufanele kuqashelwe ukuthi imifino esineqabunga, izithelo, izithelo zezithelo kanye nenyama yenkukhu nazo izitsha zokudlula i-arsenic kusukela emvelweni kuya kuhlelo lwethu lokugaya ukudla.
Ngisho nabantu abangadli irayisi, imifino eluhlaza, izithelo, izithelo zezithelo kanye nenkukhu inyama ingathola i-arsenic ohlelweni lwayo lokugaya ngokuphuza amanzi.
E-Royal Geographic Society Arsenic Conference eyabanjelwa eLondon ngo-2007, iphephandaba linikeze igama lalawo mazwe anecala lokungcola kwe-arsenic futhi i- United States yafika endaweni yesine .
Izindaba Ezinhle
Kukhona izindaba ezinhle zabadla abalayisi, noma kunjalo. Iningi le-arsenic elayisi lingasuswa ngokuhlanza ngokuphelele okusanhlamvu ngaphambi kokupheka.
Kungumkhuba engiwuqaphele kusukela ngosuku engiye ngafunda ukupheka irayisi. Abanye abapheka baphambene nokuhlanza ukufakazela ukuthi eziningi zamaminerali ziyangena emanzini okugcoba futhi zingene emanzini. Ngangihlale ngiphikisa ukuthi ezweni lapho ilayisi lithengiswa khona ngekhilo ezivini ezivulekile eziveza izitshalo ezingenamvubelo zibe uthuli namabhaktheriya athathwa yizinambuzane nokuphathwa kwabantu, ayikho indlela engizoyipheka irayisi ngaphandle kokuyihlanza ngaphambi kokupheka okungenani izinguquko ezintathu zamanzi. Manje, kubonakala sengathi ngenza mina nomndeni wami umusa omkhulu ngokungafuni ukulandela abaphikisi bokuhlanza ilayisi.
Ngenxa yokuthi ayikho indlela yokuthola ukuthi irayisi elisetshenziselwa imikhiqizo yelayisi (okubandakanya okusanhlamvu kwelayisi nokudla komntwana) ihlanjululwe kahle ngaphambi kokucubungula, kungcono ukuhlala kude nabo.