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NTIS 바로가기공업화학 = Applied chemistry for engineering, v.31 no.4, 2020년, pp.360 - 367
최형준 (세명대학교 환경안전시스템공학과) , 안진성 (세명대학교 환경안전시스템공학과) , 최석순 (세명대학교 환경안전시스템공학과)
In this study, the accumulation and distribution routes of microplastics in soil environment were examined, and their analytical methodologies were summarized. Density separation and removal process of inhibition materials were introduced for the separation of microplastics in soil and the basic pri...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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미세플라스틱이 대형동물에 물리적 영향을 끼치는 방법은? | 미세플라스틱은 크게 얽힘(entanglement) 및 섭취(ingestion) 현상을 통해 대형동물에 물리적 영향을 끼치는 것으로 알려져 있다. 얽힘은 그물 조각이나 폐 구조물 등에 생물이 묶이거나 끼이는 현상으로 피부상처, 먹이활동저하 및 포식자로부터의 생존능력저하를 야기할 수 있다. 섭취는 플라스틱을 먹이로 착각하여 섭식하는 현상으로, 내장 상처유발 및 막힘을 야기할 수 있다. 나노 사이즈의 미세플라스틱을 나노플라스틱(nanoplastics)이라 별도로 명명하기도 하는데, 이러한 나노플라스틱 입자는 큰 비표면적(specific surface area)으로 인해 잔류 농약 등 외부 유해물질에 대한 흡착능이 뛰어나며[6] 생물체의 세포막 (plasma cell membrane)을 투과하여, 분자 수송체 역할을 수행함으로써 생물체에 독성을 나타내는 것으로 보고된 바 있다[7,8]. | |
플라스틱(plastics)이란? | 플라스틱(plastics)은 오일 또는 가스로부터 추출된 단량체(monomer) 의 중합(polymerization)으로부터 유도된 합성 유기 중합체이다. 가공이 쉽고 생산비용이 저렴하며 다양한 환경조건에 노출되어도 변형이나 손상이 적어 실생활에 광범위하게 사용되어왔다. | |
미세플라스틱(microplastics)의 종류를 구분하면? | 미세플라스틱(microplastics)은 직경 5 mm 이하의 작은 플라스틱 입자를 가리키며[4], 다양한 산업공정으로부터 직접 생산된 1차 미세플라스틱(primary microplastics)과 생분해(bio-degradation), 광분해(photo-degradation), 열분해(thermal-degradation), 가수분해(hydrolysis) 등 물리 화학적 및 생물학적 분해를 통해 생성된 2차 미세플라스틱(secondary microplastics)으로 구분할 수 있다. 1차 미세플라스틱은 개인위생용품 (personal care products)에 함유되어있는 구형(sphere)의 미세비드(microbead) 및 세탁과정 중 발생할 수 있는 미세섬유(microfiber)를 포함한다(Table 1). |
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