마이크로웨이브 산분해법을 활용한 식품용 기구 및 용기·포장의 중금속 함량 시험

다국어 초록 (Multilingual Abstract)

In this study, the lead and cadmium test method of synthetic resin, processed cellulose, rubber, paper, starch in the 「Standards and specifications for food utensils, containers and packaging」 was intended to be improved so that the microwave acid decomposition method could be additionally applied from the existing dry ashing method. In addition, the cold vapor-atomic absorption spectrophotometry of the mercury test method was intended to improve the microwave acid decomposition method, which has a relatively simple test process. Based on the results of this study, the results of the pre-treatment with the microwave acid decomposition test method are judged to be effective, just like the dry ashing method and the lead, cadmium, and mercury analysis conducted with the nitric acid reflux cooling method. Therefore, even if the microwave acid decomposition method analyzes the lead, cadmium, and mercury contents of food utensils and container packaging products, the same analysis results as the existing test method can be obtained. The dry ash method(lead, cadmium) for the test of lead, cadmium, and mercury and the sulfuric acid reflux method (mercury) may take about 1 hour and 30 minutes for the dry ash method and more than 3 hours to 5 hours for the sulfuric acid reflux method. Therefore, the microwave acid decomposition method, which can complete the pretreatment of lead, cadmium, and mercury within about 1 hour and 30 minutes, is considered to be a more efficient test method compared to the time required for pretreatment. Therefore, if the microwave acid decomposition pretreatment method is added to the existing test method of 「Standards and specifications for food utensils, containers and packaging (Notification No. 2024-29, JUNE 21, 2024」, the tester can choose the appropriate heavy metal test method considering the situation in each test room, and it is judged that flexible and efficient tests will be possible accordingly.

목차 (Table of Contents)

• I. 서론 1
• Ⅱ. 문헌고찰 4
• 2.1 기존 식약처 시험방법 4
• 2.2 국내외 포장재 중금속 기준 및 시험법 문헌조사 6
• 2.3 국내외 납, 카드뮴 함량 시험 규격 비교 8
• 2.4 국내외 수은 함량 시험 규격 비교 14
• 2.5 중금속(납,카드뮴,수은) 함량 시험의 원리 20
• 2.5.1 건식회화법 20
• 2.5.2 마이크로웨이브 산분해법 22
• 2.5.3 질산황산환류법(수은) 24
• Ⅲ. 실험 재료 및 방법 27
• 3.1 실험 대상시료의 선정 27
• 3.2 시약 및 표준품 31
• 3.3 실험 방법 34
• 3.3.1. 식약처 기준 납, 카드뮴 시료의 전처리 34
• 3.3.2 식약처 기준 수은 시료의 전처리 36
• 3.3.3 개선 시험법의 납, 카드뮴 시료의 전처리 37
• 3.3.4 개선 시험법의 수은 시료의 전처리 37
• 3.4 실험기기 및 분석조건 40
• 3.5. 표준용액의 조제 43
• 3.5.1 식약처 기준 시험법의 표준용액 43
• 3.5.2 개선 시험법의 표준용액 44
• 3.5.3 실험방법 분석법 검증 방법 44
• 3.6 검출한계 및 정량한계 46
• 3.7 정확도의 측정불확도 산정 47
• Ⅳ.실험 결과 및 고찰 49
• 4.1 식약처 납, 카드뮴, 수은 시험의 검량선 작성 49
• 4.2 납, 카드뮴의 실험 결과 51
• 4.3 식약처 기준 수은 실험 결과 53
• 4.4 고찰 55
• Ⅴ.결론 57
• Ⅵ. 참고문헌 59