Qhov sib txawv tseem ceeb ntawm microplastics thiab nanoplastics yog tias microplastics muaj cov khoom uas muaj tsawg dua 5 millimeter particle loj whereas nanoplastics muaj cov khoom uas tsawg dua 100 nanometer particle loj.
Microplastics thiab nanoplastics tuaj yeem categorized nyob ntawm seb qhov luaj li cas ntawm cov ntaub ntawv no. Ntxiv mus, muaj ob pawg ntawm microplastics ua thawj microplastics thiab lwm yam microplastics; cov subcategories no tau muab faib nyob ntawm seb qhov loj me me ua ntej thiab tom qab nkag mus rau ib puag ncig. Primary microplastics muaj cov khoom uas muaj tsawg dua 5 millimeters ua ntej nkag mus rau ib puag ncig thaum cov microplastics thib ob tsim los ntawm cov khoom yas loj dua tom qab nkag mus rau ib puag ncig.
YMicroplastics yog dab tsi?
Cov ntaub ntawv microplastic yog cov khoom me me ntawm cov yas uas tuaj yeem ua paug ib puag ncig. Cov ntaub ntawv no tsis suav nrog hauv ib hom yas tshwj xeeb, tab sis peb tuaj yeem faib cov yas no raws li cov ntaub ntawv uas muaj cov khoom uas tsawg dua 5 millimeters. Muaj ntau qhov sib txawv ntawm cov ntaub ntawv microplastic. Qee qhov no suav nrog tshuaj pleev ib ce, khaub ncaws, thiab kev lag luam.
Muaj ob pawg sib txawv ntawm microplastics: thawj thiab theem nrab microplastics. Ob pawg no tau muab faib nyob ntawm qhov loj me ntawm cov khoom siv microplastic ua ntej thiab tom qab nkag mus rau ib puag ncig. Cov microplastics tseem ceeb muaj cov khoom uas muaj tsawg dua 5 millimeter loj ua ntej nkag mus rau ib puag ncig thaum cov microplastics thib ob tsim los ntawm cov khoom yas loj dua tom qab nkag mus rau ib puag ncig. Ob hom microplastic no feem ntau tshwm sim nyob rau hauv ib puag ncig ntawm qib siab, feem ntau hauv cov dej hauv dej thiab dej hiav txwv.
Daim duab 01: Cov Microplastics sib txawv hauv Cov Qauv Dej Dej
Feem ntau, cov khoom yas zoo li maj mam degrade ntau xyoo. Yog li ntawd, microplastics zoo li yuav zom thiab sib sau ua ke hauv lub cev thiab cov ntaub so ntswg ntawm ntau yam kab mob. Peb tuaj yeem pom cov microplastics hauv dej thiab dej hiav txwv, seafloor, av, tib neeg cov ntaub so ntswg, thiab lwm yam.
Nanoplastics yog dab tsi?
Nanoplastics yog cov khoom siv polymer uas muaj tsawg dua 100-nanometer particle loj. Cov khoom no nyob rau hauv ib puag ncig tuaj yeem tshwm sim raws li cov khoom lag luam ib ntus thaum lub sij hawm tawg ntawm microplastics thiab xaus rau qhov tsis pom ib puag ncig kev hem thawj ntawm qhov muaj peev xwm siab.
Vim tias nanoplastics me me thiab muaj peev xwm hla ntawm cov cellular membranes thiab cuam tshuam rau kev ua haujlwm ntawm cov hlwb, muaj kev pheej hmoo rau ib puag ncig thiab tib neeg kev noj qab haus huv. Ntxiv mus, nanoplastics yog lipophilic tshuaj, thiab raws li kev tshawb pom tsis ntev los no, polyethylene nanoplastics tuaj yeem nkag mus rau hauv cov tub ntxhais hydrophobic ntawm lipid bilayers. Cov ntaub ntawv no zoo li hla lub epithelial daim nyias nyias ntawm cov ntses, tsub zuj zuj nyob rau hauv ntau yam kabmob, nrog rau lub gallbladder, pancreas, thiab lub hlwb. Nws tau tshawb pom tias hauv Zebrafish, polystyrene nanoparticles tuaj yeem ua rau muaj kev ntxhov siab los hloov cov piam thaj thiab cortisol. Txawm li cas los xij, muaj cov ntaub ntawv me ntsis txog kev noj qab haus huv ntawm cov ntaub ntawv no rau cov kab mob, suav nrog tib neeg.
Qhov txawv ntawm Microplastics thiab Nanoplastics yog dab tsi?
Microplastics thiab nanoplastics tuaj yeem categorized nyob ntawm seb qhov luaj li cas ntawm cov ntaub ntawv no. Qhov sib txawv tseem ceeb ntawm microplastics thiab nanoplastics yog tias cov microplastics muaj cov khoom uas muaj tsawg dua 5 millimeter qhov loj thaum nanoplastics muaj cov khoom uas tsawg dua 100 nanometer loj.
Hauv qab no yog cov ntsiab lus ntawm qhov sib txawv ntawm microplastics thiab nanoplastics.
Summary – Microplastics vs Nanoplastics
Microplastics thiab nanoplastics tuaj yeem categorized nyob ntawm seb qhov luaj li cas ntawm cov ntaub ntawv no. Qhov sib txawv tseem ceeb ntawm microplastics thiab nanoplastics yog tias microplastics muaj cov khoom uas muaj tsawg dua 5 millimeter loj whereas nanoplastics muaj cov khoom uas tsawg dua 100 nanometer loj.
