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khói mù quang hóa

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khói mù quan hóa – PowerPoint PPT presentation

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Transcript and Presenter's Notes Title: khói mù quang hóa 1KHÓI MÙ QUANG HÓA

• Nhóm 12 Hu?nh Kim Ý Th?o
• Nguy?n C?u Thanh Nhàn
• Ngô Ðình Khánh
• Phan Trung Tân

2I- Khái ni?m

• Khói mù quang hóa là gì?
• Khói mù quang hóa ( suong mù quang hóa) là h?n h?p các ch?t ph?n ?ng và các s?n ph?m ph?n ?ng sinh ra khi các hidrocacbon, các oxit nito cùng có m?t trong khí quy?n du?i tác d?ng c?a BXMT d? hình thành nh?ng v?t ch?t nhu ozon, aldehit, PAN

3

• Khói mù quang hóa x?y ra ? t?ng d?i luu c?a khí quy?n. Noi t?p trung các h?p ch?t khí gây ô nhi?m.

4II- Nguyên nhân

• 1)Nh?ng nam 1950

• T? nam 1950 s? bùng n? c?a cu?c cách m?ng công nghi?p dã ?nh hu?ng nghiêm tr?ng d?n không khí. Và phát súng d?u tiên chính là nu?c Anh.
• V?i nguyên li?u s?n xu?t và sinh ho?t chính là than dá.
• Quá trình dó dã s?n sinh ra khói và SO2 vào không khí, g?p di?u ki?n thu?n loi, k?t h?p v?i suong mù t?o thành suong mù công nghi?p.

• Nam 1952, t?i London (Anh). Hi?n tu?ng này kéo dài và gi?t ch?t 4000 ngu?i trong vòng 4 ngày

5

• 2) Hi?n t?i

• Ð?n bây gi? nguyên nhân chính là vì vi?c s? d?ng xang, d?u, gas

6III-Ð?c di?m

• Nh?ng di?u ki?n trong môi tru?ng d? x?y ra khói mù quang hóa
• Th?i gian trong ngày.
• M?t vài y?u t? khí tu?ng gió, mua, hi?n tu?ng d?o nhi?t.
• Ð?a hình.

7(No Transcript) 8IV- ?nh hu?ng

• 1) Tác h?i d?n s?c kh?e con ngu?i
• Hen suy?n, viêm ph? qu?n, ho và t?c ng?c.
• Tang s? nh?y c?m d?i v?i lây nhi?m v? du?ng hô h?p.
• Làm gi?m ch?c nang c?a ph?i.
• N?u ti?p xúc lâu dài d? làm s?m lão hóa v? ph?i, và góp ph?n gây ra b?nh ph?i mãn tính.
• Kích ?ng m?t m?nh

9

• Qu?ng tru?ng Thiên An Môn t?i th? dô B?c Kinh mù m?t vì khói 

• Tòa nhà ch?c tr?i b? che l?p b?i khói

102) Tác d?ng lên th?c v?t và d?ng v?t

• Cây c?i là nh?ng sinh v?t h?p th? nhi?u ch?t khí trong t?ng d?i luu. Nên nó ch?u s? ?nh hu?ng không nh?.
• Cây c?i ch?t, khô c?n. Ð?ng v?t b? ?nh hu?ng, d?t bi?n.

11V- Bi?n pháp

• Gi?m các ch?t khí t? d?ng co.
• Ph?i tìm ki?m và khuy?n khích vi?c s? d?ng các ngu?n nang lu?ng s?ch.
• S? d?ng các t?m l?c sinh h?c
• S? d?ng các ch?t oxy hóa.

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