{"product_id":"2940014367622","title":"External Quality-Assurance Results for the National Atmospheric Deposition Program\/ National Trends Network and Mercury Deposition Network, 2004","description":"The U.S. Geological Survey (USGS) used five programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program\/National Trends Network (NADP\/NTN) and two programs to provide external quality-assurance monitoring for the NADP\/Mercury Deposition Network (NADP\/MDN) during 2004. An intersite-comparison program was used to estimate accuracy and precision of field-measured pH and specific-conductance. The variability and bias of NADP\/NTN data attributed to field exposure, sample handling and shipping, and laboratory chemical analysis were estimated using the sample-handling evaluation (SHE), field-audit, and interlaboratory-comparison programs. Overall variability of NADP\/NTN data was estimated using a collocated-sampler program. Variability and bias of NADP\/MDN data attributed to field exposure, sample handling and shipping, and laboratory chemical analysis were estimated using a system-blank program and an interlaboratory-comparison program.","brand":"The Delano Max Wealth Institute, LLC.","offers":[{"title":"Default Title","offer_id":47069234266352,"sku":"2940014367622","price":3.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940014367622_p0.jpg?v=1763607119","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940014367622","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}