Title
Determinacin de Arsnico en aguas de consumo humano: Por Absorcin Atmica en el Distrito de Puente Piedra (Spanish Edition,Used
Delivery time: 8-12 business days (International)
En el distrito de Puente Piedra, ubicado en LimaPer, se evalu el grado de contaminacin de arsnico, especialmente por tratarse de un distrito con escaso control sanitario sobre la calidad de agua de consumo humano. Para llevar a cabo este estudio se tomaron 38 muestras de agua de consumo humano, 13 provenan de SEDAPAL, 13 de agua de cisterna y 12 de agua de pozo, se us el mtodo espectrofotomtrico de absorcin atmica con horno de grafito. Encontrando que la concentracin promedio de arsnico del total de muestras provenientes de SEDAPAL fue de 9.13 g As/L y el total de muestras provenientes de cisterna fue de 5.04 g As/L los cuales no exceden la concentracin mxima permisible. Tambin se hall que la concentracin promedio de arsnico en el agua de consumo humano proveniente de pozo fue de 22,40 g As/L, la cual est por encima del lmite permisible. Teniendo como referencia la Norma Tcnica Peruana 214.003.87 (50 g As/L) y la Organizacin Mundial de la Salud (10 g As/L).
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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.