{"id":302624,"date":"2024-10-19T20:40:38","date_gmt":"2024-10-19T20:40:38","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-208142019\/"},"modified":"2024-10-25T18:12:28","modified_gmt":"2024-10-25T18:12:28","slug":"bs-iso-208142019","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-208142019\/","title":{"rendered":"BS ISO 20814:2019"},"content":{"rendered":"

This document specifies a method for the measurement of the photocatalytic activity (PCA) of nanoparticles (NPs), suspended in an aqueous environment in physiologically relevant conditions, by measuring the ultraviolet (UV)-induced nicotine adenine dinucleotide hydrate (NADH) oxidation.<\/p>\n

The measurement is intended to assess the potential for the photo-toxicity of nanomaterials. The method is also applicable to NP aggregates and agglomerates.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
8<\/td>\n1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n
9<\/td>\n3.2 Symbols and abbreviated terms <\/td>\n<\/tr>\n
10<\/td>\n4 Description of the test method
5 Reagents and apparatus
5.1 Reagents <\/td>\n<\/tr>\n
11<\/td>\n5.2 Apparatus
6 Measurement procedure
6.1 Measurement of NP suspension basic properties
6.1.1 UV-Vis absorption spectrum measurement <\/td>\n<\/tr>\n
12<\/td>\n6.1.2 NP suspension stability measurement
6.2 UV trans-illuminator light intensity calibration based on 2NB actinometry <\/td>\n<\/tr>\n
13<\/td>\n6.3 Measurement of NADH solution fluorescence intensity
6.3.1 NADH photo-oxidation rate measurement at various NP concentrations <\/td>\n<\/tr>\n
14<\/td>\n6.3.2 Calculation of NADH photo-oxidation rate at various NP concentrations <\/td>\n<\/tr>\n
15<\/td>\n7 Test report
7.1 Information <\/td>\n<\/tr>\n
16<\/td>\n7.2 Report data format
7.2.1 Correction factors C(i,j) obtained by actinometry (see 7.2) with \u03bb(max,TI)
7.2.2 Calibrated slope of NADH fluorescence decrease <\/td>\n<\/tr>\n
17<\/td>\n7.2.3 Plot of kapp versus NP concentration
7.2.4 NADH equivalent specific PCA
8 Precision
8.1 Repeatability
8.2 Reproducibility <\/td>\n<\/tr>\n
18<\/td>\nAnnex A (normative) Schematic diagram of 96-well positioning block <\/td>\n<\/tr>\n
19<\/td>\nAnnex B (informative) Sample calibration of UV trans-illuminator light intensity <\/td>\n<\/tr>\n
24<\/td>\nAnnex C (informative) Interlaboratory comparison study of TiO2 NP PCA <\/td>\n<\/tr>\n
29<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Nanotechnologies. Testing the photocatalytic activity of nanoparticles for NADH oxidation<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2019<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":302627,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-302624","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/302624","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/302627"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=302624"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=302624"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=302624"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}