I-Phosphorus (P) ingenye yezinto ezibalulekile nezinhlanganisela ze-biosphere, ngoba iyingxenye ye-nucleic acid nezinye izinto ezibandakanyeka ezinhlelweni zamandla we-metabolic. Ukushoda kwePhosphorus kuholela ekwehleni komkhiqizo womzimba. Ngokusakazwa kwalesi sici emvelweni, zonke izinto ezinokuqukethwe kwazo zingancibilika kancane, noma cishe azincibiliki. Izingxenye ezizinzile kakhulu yi-magnesium ne-calcium orthophosphates. Kwezinye izixazululo, ziguqulwa zibe yi-dihydrogen phosphates, emuncwa yizimbali. Ngenxa yalokho, izinhlanganisela eziqukethe i-phosphorus equkethe ezivela kuma-phosphates angavamile.
Ukwakhiwa nokusakazwa kukaP
Kwezemvelo, i-phosphorus itholakala kwamanye amadwala avela emathunjini omhlaba. Umjikelezo wale nto kumvelo ungahlukaniswa ngezigaba ezimbili:
- terrestrial - iqala lapho amadwala aqukethe i-P eza phezulu, lapho ahlangana khona;
- amanzi - isici singena olwandle, ingxenye yaso imuncwa yi-phytoplankton, yona, edliwa yizinyoni zasolwandle futhi ikhishwe kanye nemikhiqizo yazo.
Ingxenye yendle yezinyoni, equkethe i-P, iphelela emhlabeni, futhi ingagezwa ibuyele olwandle, lapho konke kuzoqhubeka khona ngokujikeleza okuyindilinga okufanayo. Futhi, i-phosphorus ingena kwimvelo yasemanzini ngokubola kwezidumbu zezilwane zasolwandle. Amanye amathambo ezinhlanzi ahlala ngaphansi kolwandle, aqoqane futhi aphenduke amadwala asezintabeni.
Ukwanda ngokweqile kwemizimba yamanzi nge-phosphorus kuholela emiphumeleni elandelayo:
- ukwanda kwenani lezitshalo ezindaweni zamanzi;
- ukuqhakaza kwemifula, izilwandle neminye imizimba yamanzi;
- eutrophication.
Lezo zinto eziqukethe i-phosphorus futhi ezisemhlabeni zingena emhlabathini. Izimpande zezitshalo zimunca uP kanye nezinye izinto. Lapho utshani, izihlahla, namahlathi kufela, i-phosphorus ibuyela emhlabathini nayo. Ilahleka phansi lapho kwenzeka ukuguguleka kwamanzi. Kuleyo nhlabathi lapho kunokuqukethwe okuphezulu kwe-P, ngaphansi kwethonya lezici ezahlukahlukene, ama-apatites nama-phosphorites akhiwa. Umnikelo ohlukile kumjikelezo we-P wenziwa ngabantu abasebenzisa umanyolo we-phosphorus namakhemikhali asendlini ane-R.
Ngakho-ke, umjikelezo we-phosphorus emvelweni uyinkqubo ende. Ngesikhathi sayo, into ingena emanzini nasemhlabeni, igcwalisa izilwane nezitshalo ezihlala emhlabeni nasemanzini, iphinde ingene emzimbeni womuntu ngenani elithile.
