Title
Hazardous Air pollution: Contribution of Transport Sector in Dhaka City,Used
Delivery time: 8-12 business days (International)
Air pollution from traffic sources is considered to be a major environmental challenge the burgeoning metropolitan cities of the developing nations confront today.Like other megacities in the developing countries, air pollution has emerged as a serious problem in the Dhaka city. Dhaka, one of the largest mega cities of the world, is also faced with serious air pollution problem due to rapid growth of vehicles in recent times. This study mainly concentrated on two issues of air quality in Dhaka city and contribution of vehicles emission. The maximum and minimum SO2 and CO concentration is 24 ppb & 3 ppb and 0.5 ppb & 0.2ppm respectively which remain below acceptable limit (30ppb& 35ppb). The major contribution of this air pollution in Dhaka is coming from the complex vehicles fleet. It reveals from this study that a total of 1213.76 ton of various kinds of pollutants emit from the vehicles fleet in the Dhaka city every day. The tests revealed that old diesel run vehicles are the worst polluters that contribute mostly in the rise of particulate matter in the ambient air of the city.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.