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Lớp tráng microchiết rắn dựa trên phủ điện phân plasma âm và dương trên dây titanium để xác định nerolidol trong mẫu nước
Tóm tắt
Các lớp tráng microchiết rắn mới được chuẩn bị bằng phương pháp điện phân plasma âm và dương và được sử dụng để đo hàm lượng nerolidol trong nước và nước tinh distillate từ hoa cam đắng bằng phương pháp GC-FID. Đặc điểm hình thái của các lớp tráng được khảo sát bằng kính hiển vi điện tử quét phát xạ trường. Các yếu tố hiệu quả trong quá trình chiết xuất và giải hấp đã được nghiên cứu. Các điều kiện tối ưu bao gồm việc microchiết 50 mL dung dịch nước chứa 35% (w/v) NaCl ở 45 °C trong 45 phút bằng lớp tráng dương, sau đó là giải hấp bằng 50 μL hexane trong bể siêu âm trong 5 phút. Phương pháp phát triển có phạm vi động học tuyến tính từ 1–1000 ng mL−1 (R2 = 0.9980). Giới hạn phát hiện (S/N = 3) và giới hạn định lượng (S/N = 10) của phương pháp phát triển lần lượt là 0.3 và 1 ng mL−1. Sai lệch chuẩn tương đối trong ngày, giữa các ngày và giữa các sợi lần lượt là 8–16, 9.2–16.7 và 10.1–13.0%. Nồng độ của nước distillate từ hoa cam đắng được đo là 250 ng mL−1. Chất hấp phụ đã chuẩn bị có thể được sử dụng nhiều lần do độ ổn định cơ học tốt của nó. Phương pháp phát triển được sử dụng để xác định nerolidol, như là chỉ thị chất lượng sản phẩm, trong nước distillate từ hoa cam đắng. Phương pháp phát triển là đơn giản, tiện lợi, nhạy cảm và có độ tái lập chấp nhận được, có thể được sử dụng để microchiết các hợp chất hữu cơ bay hơi trong các ma trận nước và thực phẩm khác nhau.
Từ khóa
#nerolidol #microextraction #plasma electrolytic deposition #bitter orange blossom #GC-FIDTài liệu tham khảo
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