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Bilim insanlar\u0131, \u015fi\u015felenmi\u015f suyun daha \u00f6nce tahmin edilenden 100 kat daha fazla plastik par\u00e7as\u0131 i\u00e7erdi\u011fini s\u00f6yledi.<\/p>\n
240 B\u0130N PLAST\u0130K PAR\u00c7A \u0130\u00c7ER\u0130YOR<\/strong><\/p>\n Ara\u015ft\u0131rmac\u0131lar, Proceedings of the National Academy of Sciences dergisinde<\/strong> yay\u0131nlanan bir \u00e7al\u0131\u015fmada, ortalama bir litre \u015fi\u015felenmi\u015f suyun yakla\u015f\u0131k 240.000 tespit edilebilir plastik par\u00e7a i\u00e7erdi\u011fini yazd\u0131.<\/p>\n Bu mikroskobik partik\u00fcller, plastikleri daha dayan\u0131kl\u0131, esnek ve uzun \u00f6m\u00fcrl\u00fc hale getiren kimyasallar olan ftalatlar\u0131 ta\u015f\u0131r.<\/p>\n Ftalat maruziyeti ABD’de her y\u0131l 100.000 erken \u00f6l\u00fcmle ili\u015fkilendirilmektedir. Bu kimyasallar\u0131n v\u00fccuttaki hormon \u00fcretimine m\u00fcdahale etti\u011fi bilinmektedir.<\/p>\n \u015e\u0130\u015eELENM\u0130\u015e SUDA NE KADAR PLAST\u0130K VAR?<\/strong><\/p>\n Bilim insanlar\u0131 suda plastik oldu\u011funu y\u0131llard\u0131r biliyor. 2018 y\u0131l\u0131nda yap\u0131lan bir \u00e7al\u0131\u015fmada, her litre suda ortalama 300 plastik par\u00e7ac\u0131\u011f\u0131 tespit edildi.<\/p>\n Son \u00e7al\u0131\u015fmada ara\u015ft\u0131rmac\u0131lar, 1 mikrometreden daha k\u00fc\u00e7\u00fck par\u00e7ac\u0131klar olan nanoplastikleri incelediler. (Referans olmas\u0131 a\u00e7\u0131s\u0131ndan, bir insan sa\u00e7\u0131n\u0131n \u00e7ap\u0131 yakla\u015f\u0131k 70 mikrometredir.<\/p>\n 100 KAT DAHA FAZLA OLDU\u011eU ORTAYA \u00c7IKTI<\/strong><\/p>\n Nanoplastikleri incelemek i\u00e7in yeni kapasitelere sahip olan bilim insanlar\u0131, \u015fi\u015felenmi\u015f sudaki plastik par\u00e7alar\u0131n\u0131n miktar\u0131n\u0131n daha \u00f6nce ke\u015ffedilenden yakla\u015f\u0131k 10 ila 100 kat daha fazla oldu\u011funu ortaya \u00e7\u0131kard\u0131.<\/p>\n B\u0130L\u0130M \u0130NSANLARI PLAST\u0130\u011e\u0130 NASIL BULDU?<\/strong><\/p>\n Columbia \u00dcniversitesi ve Rutgers \u00dcniversitesi’nden ara\u015ft\u0131rmac\u0131lar ABD’de sat\u0131lan \u00fc\u00e7 pop\u00fcler \u015fi\u015fe suyu markas\u0131n\u0131 test etti.<\/p>\n Columbia’da biyofizik\u00e7i olan \u00e7al\u0131\u015fman\u0131n ortak yazar\u0131 Wei Min, numuneleri test etmek i\u00e7in kullan\u0131lan lazer y\u00f6nteminin mucitlerinden biriydi.<\/p>\n Ara\u015ft\u0131rmac\u0131lar, sonu\u00e7lar\u0131 yorumlamak i\u00e7in veriye dayal\u0131 bir algoritma kullanmadan \u00f6nce numuneleri yedi yayg\u0131n plastik t\u00fcr\u00fc a\u00e7\u0131s\u0131ndan inceledi.<\/p>\n HER L\u0130TREDE 370 B\u0130NE YAKIN PAR\u00c7ACIK BULUNDU<\/strong><\/p>\n Ara\u015ft\u0131rmaya g\u00f6re, ara\u015ft\u0131rmac\u0131lar her litrede 110.000 ila 370.000 par\u00e7ac\u0131k buldu. Par\u00e7ac\u0131klar\u0131n yakla\u015f\u0131k y\u00fczde 90’\u0131 nanoplastik, geri kalan\u0131 ise mikroplastikti.<\/p>\n “T\u00dcKET\u0130C\u0130LER\u0130 GEREKS\u0130Z YERE KORKUTMAKTAN BA\u015eKA B\u0130R \u0130\u015eE YARAMAMAKTADIR”<\/strong><\/p>\n \u00c7al\u0131\u015fman\u0131n ard\u0131ndan Uluslararas\u0131 \u015ei\u015felenmi\u015f Su Birli\u011fi, “\u015eu anda nano ve mikroplastik partik\u00fcllerin potansiyel sa\u011fl\u0131k etkileri konusunda hem standartla\u015ft\u0131r\u0131lm\u0131\u015f (\u00f6l\u00e7\u00fcm) y\u00f6ntemlerin bulunmad\u0131\u011f\u0131n\u0131 hem de bilimsel bir fikir birli\u011fi olmad\u0131\u011f\u0131na var\u0131lm\u0131\u015ft\u0131r.<\/p>\n Bu nedenle, i\u00e7me suyundaki bu par\u00e7ac\u0131klarla ilgili medyada \u00e7\u0131kan haberler t\u00fcketicileri gereksiz yere korkutmaktan ba\u015fka bir i\u015fe yaramamaktad\u0131r.” ifadeleri yer ald\u0131.<\/p>\n \u00c7EVRE \u0130\u00c7\u0130N TEHD\u0130T OLU\u015eTURMAYA DEVAM ED\u0130YOR<\/strong><\/p>\n D\u00fcnya \u00e7ap\u0131nda plastik \u00fcretimi, her y\u0131l \u00fcretilen 400 milyon metrik ton ile \u00e7evre i\u00e7in bir tehdit olu\u015fturmaya devam ediyor.<\/p>\n Y\u0131lda 30 milyon tondan fazla plastik suya veya karaya d\u00f6k\u00fclmekte ve sentetik giysiler gibi plastikten yap\u0131lan bir\u00e7ok \u00fcr\u00fcn kullan\u0131l\u0131rken par\u00e7ac\u0131klar sa\u00e7maktad\u0131r.<\/p>\n Uzmanlar halen bunun insanlar \u00fczerindeki sa\u011fl\u0131k etkilerini belirlemek i\u00e7in \u00e7al\u0131\u015fmaktad\u0131r.<\/p>\n","protected":false},"excerpt":{"rendered":" Bilim insanlar\u0131, \u015fi\u015felenmi\u015f suyun daha \u00f6nce tahmin edilenden 100 kat daha fazla plastik par\u00e7as\u0131 i\u00e7erdi\u011fini s\u00f6yledi. 240 B\u0130N PLAST\u0130K PAR\u00c7A \u0130\u00c7ER\u0130YOR Ara\u015ft\u0131rmac\u0131lar, Proceedings of the National Academy of Sciences dergisinde yay\u0131nlanan bir \u00e7al\u0131\u015fmada, ortalama bir litre \u015fi\u015felenmi\u015f suyun yakla\u015f\u0131k 240.000 tespit edilebilir plastik par\u00e7a i\u00e7erdi\u011fini yazd\u0131. Bu mikroskobik partik\u00fcller, plastikleri daha dayan\u0131kl\u0131, esnek ve uzun \u00f6m\u00fcrl\u00fc hale getiren kimyasallar olan<\/p>\n","protected":false},"author":1,"featured_media":25731,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[79],"tags":[],"class_list":["post-25730","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ekonomi"],"yoast_head":"\n