Ngokusho kocwaningo olwenziwe yi-Faculty of Physics kanye ne-Institute of Environmental Sciences and Technology ye-Autonomous University of Barcelona (ICTA-UAB), ichibi lamanzi anosawoti iMar Menor eMurcia, eSpain, elikhulu kunawo wonke eYurophu, liqukethe inhlabathi enamazinga e-lead, i-arsenic, i-zinc, i-mercury, ithusi kanye nesiliva adlula imingcele yobuthi kanye namazinga abikiwe ezindaweni zemvelo ezifanayo zasogwini emhlabeni jikelele.
Ucwaningo luphinde luvuselele umlando wokungcoliswa kwensimbi ngekhulu lama-20 nelama-21, okubonisa ukuthi ukumbiwa kwemigodi ezintabeni zaseCartagena-La Unión, okwakusebenza phakathi kwekhulu le-19 nelama-20, kwakuwumthombo oyinhloko wokuqongelela kwensimbi ezidakeni. Ngisho nangemva kokuba izimayini zivaliwe ngawo-1990, ukugeleza kwensimbi ngesikhathi semvula kwaqhubeka kuthinta ichibi, futhi namuhla ingxenye eseningizimu yechibi, eduze kwemisele yangaphambili yezimayini, iqukethe amadiphozithi amakhulu kakhulu.
Idatha yomlando ikhombisa ukuthi amazinga aphezulu afinyelelwa maphakathi nekhulu lama-20. Nakuba amanye amazinga ehla ngemva kokuvinjelwa kwamanzi angcolile okumba ngo-1955, ezinye izinsimbi zaqhubeka nokungena echibini ngokugeleza kwamanzi avela emfucumfucwini yezimayini kanye nemithombo emisha yasemadolobheni njengendle kanye nopende lwezikebhe ezikhethekile. Sekukonke, inhlabathi yaseMar Menor iqukethe izinkulungwane zamathani ezinsimbi, futhi lezi zibalo zibonisa ubukhulu balokhu kungcola komlando.
Ngokusho kuka-Irene Alorda, umcwaningi e-ICTA-UAB kanye noMnyango Wefiziksi we-UAB, "imiphumela yalokhu kuqongelela kwensimbi, okwamanje okungenawo umthelela ezintweni eziphilayo, inganda esikhathini esizayo ngenxa yokusebenzisana neminye imithwalo evela emisebenzini yabantu."
Nakuba amazinga amanje omhlaba ephansi kunangesikhathi esiningi sekhulu lama-20, lolu cwaningo luxwayisa ngokuthi ukuguquka kwesimo sezulu, izigaba ze-eutrophication, kanye nokuvuselelwa kwenhlabathi kungakhipha lezi zinsimbi futhi, kwandise ukutholakala kwazo ezintweni eziphilayo zasemanzini futhi kusongela ukuhlukahluka kwezinto eziphilayo emvelweni.
Lo msebenzi ugcizelela ukubaluleka kokuphathwa okuhlanganisiwe kwezinhlelo zemvelo zasogwini, njengoba amathonya omlando ahlanganiswe nemiphumela yoshintsho lomhlaba wonke angabhebhethekisa ukungcola okukhona. Uphinde unikeze ulwazi olubalulekile lokuhlela amasu okulondolozwa kwesikhathi esizayo kanye nokunciphisa ukungcola echibini laseMar Menor kanye nezinhlelo zemvelo ezifanayo emhlabeni jikelele.
