Cov ntses dej ntsev tau siv los noj cov yas

2024 Tus sau: Seth Attwood | [email protected]. Kawg hloov kho: 2023-12-16 16:06

Ntses hauv dej hiav txwv tau yoog txij thaum yau los noj cov khoom pov tseg yas, zoo li cov menyuam yaus tau siv los noj zaub mov tsis zoo.

Cov kws tshawb fawb Swedish tau pom tias muaj cov ntsiab lus siab ntawm polystyrene hais hauv dej hiav txwv ua rau lawv nyiam seabass kib.

Lawv tsab xov xwm hais txog qhov no tau luam tawm hauv phau ntawv Journal Science.

Yog li ntawd, qhov no slows down lawv txoj kev loj hlob thiab ua rau lawv yooj yim mus rau predators, cov kws tshawb fawb ntseeg.

Cov kws tshawb fawb tau thov kom txwv tsis pub siv cov yas microbeads hauv cov khoom kom zoo nkauj.

Nyob rau hauv xyoo tas los no, muaj ntau thiab ntau lub cim ceeb toom ntawm kev nce ntxiv ntawm cov khoom pov tseg yas hauv dej hiav txwv.

Cov menyuam yaus ntawm cov ntses marine nyiam yas rau zooplankton

Raws li kev tshawb fawb luam tawm xyoo tas los, txog li 8 lab tons ntawm cov yas nkag mus rau hauv dej hiav txwv txhua xyoo.

Raws li kev cuam tshuam ntawm hluav taws xob ultraviolet, cov txheej txheem tshuaj lom neeg thiab kev puas tsuaj ntawm cov khoom siv hluav taws xob nyob rau hauv qhov cuam tshuam ntawm nthwv dej, cov khib nyiab yas no sai sai rau hauv cov khoom me me.

Cov khoom me dua 5 hli yog hu ua microplastics. Lub sij hawm tseem suav nrog microbeads siv hauv cov khoom siv tshuaj pleev ib ce xws li tshuaj txhuam hniav, cov khoom siv exfoliating, lossis cov gels ntxuav.

Biologists tau ceeb toom ntev ntev tias cov microparticles tuaj yeem tsim nyob rau hauv lub plab zom mov ntawm cov tsiaj hauv hiav txwv thiab tso cov tshuaj lom.

Cov kws tshawb fawb Swedish tau ua ntau qhov kev sim uas lawv tau txheeb xyuas qhov kev loj hlob ntawm seabass kib los ntawm kev pub lawv cov yas microparticles ntawm ntau qhov ntau.

Nyob rau hauv qhov tsis muaj xws li hais, kwv yees li 96% ntawm cov qe tau ntse hloov mus rau hauv kib. Nyob rau hauv cov dej reservoirs nrog ib tug siab concentration ntawm microplastics, qhov ntsuas no txo mus rau 81%.

Cov kib uas tau yug los hauv cov dej khib nyiab zoo li no tau me me, txav mus qeeb dua thiab muaj peev xwm taug kev tsis zoo rau lawv qhov chaw nyob, hais tias pab pawg thawj coj Dr. Una Lonnstedt ntawm University of Uppsala.

Txog li 8 lab tons ntawm cov yas nkag mus rau hauv dej hiav txwv txhua xyoo, tab sis nyob rau hauv lub zog ntawm cov xwm txheej, nws sai sai poob.

Thaum ntsib cov tsiaj nyeg, kwv yees li 50% ntawm cov ntses loj hlob hauv dej huv tau muaj sia nyob rau 24 teev. Ntawm qhov tod tes, kib tsa hauv cov tso tsheb hlau luam nrog qhov siab tshaj plaws ntawm microparticles tuag thaum tib lub sijhawm.

Tab sis qhov xav tsis thoob tshaj plaws rau cov kws tshawb fawb yog cov ntaub ntawv ntawm kev nyiam noj zaub mov, uas hloov pauv hauv cov xwm txheej tshiab ntawm cov ntses nyob.

"Txhua tus kib muaj peev xwm pub tau zooplankton, tab sis lawv nyiam noj cov khoom yas. Nws zoo li cov yas muaj tshuaj lom neeg los yog lub cev zoo nkauj uas txhawb nqa kev noj zaub mov hauv cov ntses," hais tias Dr. Lonnstedt.

"Raws li kev hais lus, yas ua rau lawv xav tias qhov no yog qee yam khoom noj muaj txiaj ntsig zoo. Qhov no zoo ib yam li tus cwj pwm ntawm cov tub ntxhais hluas uas nyiam ua rau lawv lub plab nrog txhua yam tsis muaj tseeb," - tus kws tshawb fawb ntxiv.

Cov kws sau ntawv ntawm txoj kev tshawb fawb koom nrog qhov txo qis ntawm cov ntses hom xws li seabass thiab pike hauv hiav txwv Baltic dhau 20 xyoo dhau los nrog kev nce hauv kev tuag ntawm cov menyuam yaus ntawm cov tsiaj no. Lawv sib cav tias yog tias cov yas microparticles cuam tshuam rau kev loj hlob thiab kev coj tus cwj pwm ntawm cov menyuam yaus ntses hauv ntau hom, ces qhov no yuav ua rau muaj kev cuam tshuam loj heev rau marine ecosystems.

Hauv Tebchaws Meskas, kev siv cov yas microbeads hauv cov khoom siv tshuaj pleev ib ce twb raug txwv, thiab hauv Tebchaws Europe muaj kev sib ntaus sib tua ntxiv rau qhov kev txwv zoo sib xws.

"Nws tsis yog hais txog cov khoom lag luam, nws tsuas yog hais txog cov tshuaj pleev ib ce - mascara thiab qee cov lipsticks," hais tias Dr. Lonnstedt.

Hauv tebchaws Aas Kiv, tseem muaj cov suab nrov ntawm tsoomfwv qib ntawm cov neeg uas tawm tswv yim qhia txog kev txwv tsis pub muaj microbeads ua ntej qhov no yuav ua tiav hauv European Union.

Qhov teeb meem no yuav tau tham txog lub lim tiam tom ntej ntawm lub rooj sib tham ntawm Pawg Saib Xyuas Kev Ntsuam Xyuas Environmental ntawm Lub Tsev Haujlwm.