Uphononongo lwakutsha nje iplastiki Ungcoliseko olungaphaya kwenqanaba le-micron luchonge ngokungathandabuzekiyo kwaye lwachonga ii-nanoplastics kwiisampulu zobomi bokwenyani bebhotile. amanzi. Kwafunyaniswa ukuba ukuvezwa kwi-micro-nano iiplastiki ukusuka ebhotileni rhoqo amanzi ikuluhlu lwe 105 amasuntswana ilitha nganye. I micro-nano iiplastiki Ugxininiso lwaluqikelelwa malunga ne-2.4 ± 1.3 × 105 amasuntswana ilitha nganye yebhotile amanzi, malunga ne-90% yazo yayiyi-nanoplastics. I-Nanoplastics, i-dimension yayo ikuluhlu lwe 10 -9 imitha, zincinci ngokwaneleyo ukuba ziwele ngokulula nakwigazi-ubuchopho umqobo kunye nesithintelo se-placenta kwaye sinokuba neziphumo ezifikelela kude kwimpilo yabantu.
Kuphononongo olwenziwe ngo-2018, abaphandi baphande iibrendi zebhotile ezifumaneka kwihlabathi jikelele amanzi ungcoliseko lwe-microplastic usebenzisa i-Nile Red tagging. Bafumene umyinge we-10.4 microplastic particles ngaphezu kwe-100 µm (1 micron okanye i-micrometer = 1 µm = 10⁻⁶ imitha) ngobukhulu kwilitha nganye yebhotile amanzi. Amalungu angaphantsi kwe-100 µm awakwazanga kuqinisekiswa ukuba anjalo iplastiki ngenxa yothintelo lohlalutyo lwe-spectroscopic nangona kunjalo i-adsorption yedayi ibonisile njalo. Amasuntswana amancinane ngolo hlobo (kuluhlu lobungakanani 6.5µm –100 µm) aye, ngokomndilili, ngama-325 ngenani ilitha nganye yebhotile. amanzi.
Abaphandi ngoku boyisile umda wobugcisa wohlalutyo lwe-spectroscopic ekufundeni amasuntswana amancinane kune-100 µm. Kuphononongo lwakutsha nje, baxela uphuhliso lobuchule bokucinga obunamandla kunye ne-algorithm yokuchonga ezenzekelayo enokuchonga kunye nokuhlalutya amasuntswana eplastiki kuluhlu lwesayizi ye-nano (1 nanometer = 1 nm = 10-9 imitha). Uphononongo lwebhotile amanzi kusetyenziswa ubuchule obutsha obuveziweyo ngokwelitha yebhotile amanzi imalunga ne-2.4 ± 1.3 × 105 iincinci zeplastiki, malunga ne-90% yazo ziyi-nanoplastics. Oku kungaphezulu kwe-microplastic echazwe kuphononongo lwangaphambili.
Olu pho nonongo alugcini nje ukongeza kwisiseko solwazi longcoliseko lweplastiki kodwa lucebisa ukuba ukuqhekeka kweeplastiki kuyaqhubeka ngakumbi kwinqanaba le-nano ukusuka kwinqanaba elincinci. Kweli nqanaba, iiplastiki inokuwela imiqobo yebhayoloji efana nesithintelo segazi-ingqondo kunye nesithintelo se-placenta kwaye singene kwiinkqubo zebhayoloji engunobangela wenkxalabo ngempilo yabantu.
Ubungqina obunokuthi bube nobutyhefu be-nanoplastics kunye nomonakalo kwimpilo yabantu bukhawulelwe kodwa kukho izibonakaliso malunga nokubandakanyeka kwabo kuxinzelelo lomzimba kunye nomonakalo, i-apoptosis, i-necrosis, ukuvuvukala, uxinzelelo lwe-oxidative kunye neempendulo ze-immune.
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Iingxelo:
1. I-Mason SA, i-Welch VG kunye ne-Neratko J. 2018. I-Synthetic Polymer Contamination kwi-Bottled amanzi. Imida kwiKhemistri. Ipapashwe 11 Septemba 2018. Sec. I-Analytical Chemistry Volume 6. DOI: https://doi.org/10.3389/fchem.2018.00407
2. Qian N., et al 2024. Imifanekiso ekhawulezayo yekhemikhali ye-single-particle ye-nanoplastics nge-SRS microscopy. Ipapashwe nge-8 kaJanuwari 2024. PNAS. 121 (3) e2300582121. DOI: https://doi.org/10.1073/pnas.2300582121
3. Yee MS et al 2021. Impembelelo yeeMicroplastics kunye neNanoplastics kwiMpilo yoLuntu. Nanomatadium. Umqulu 11. Umba 2. DOI: https://doi.org/10.3390/nano11020496
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