How do you determi視得ne if a product is bio-bas風木ed?
Release Time：
2023-06-19
Source：
Carbon-14 test is an inter技說national common method to distingu美來ish biomass sources from pe爸近troleum fossil sources, 學裡according to American sta睡靜ndard ASTM D6866線器, international standard IS購爸O 16620, and European standar黑北d EN 16640, etc. Th中嗎e latest national standard "GB/T 妹報39514-2020 Defin學時ition, Terminolog雨術y and Labeling of Bioba理得sed Materials" also states t志藍hat the test method for bioba鄉在sed carbon content is the car車麗bon-14 method, which will be offici很鐵ally implemented畫船 from June 1, 2021. For architectu懂唱ral coatings, the newly冷那 released CSTM g亮年roup standard "Bio-based E水做mulsion Interior Wal司西l Coating" (T/CST河近M 00447-2021) can be used as還很 a reference for bio-bas坐妹ed interior wall architectural coatin可員g products.
You may be impatie高機nt to know what exactly is carbon-14?In農器 fact, carbon-14 origi舞商nates from the upper atmosphere of the 吧山earth and is present in all livi呢一ng and recently dead materials. All pl地在ants, animals and human劇樹s contain the same amount o爸近f carbon-14 at the same time廠小. Any material older than動區 50,000 years no longer co兵如ntains carbon-14 熱件due to the radioactive decay of carbon-視媽14, so I believe we can now unders自爸tand why fossil materials (such as oi喝街l, coal, dinosaur 站問bones, etc.) that hav雜近e been around for a long time do no文年t contain any carbon-14.
How exactly does ASTM D6866 tes分志t for biobased content? Si明物mply put - recent biomass materials (上筆biobased components) contain子爸 carbon-14, petrochemical-der照能ived materials (from petroleum) do not慢嗎. Therefore, all carbon-14 pr科是oducts come from biobased com我爸ponents. For a product c地唱ontaining both bio關公based and petrochemical-derive化城d components, the ASTM D68購東66 analysis will use the carbon-14 con但制tent to calculate how much o用來f the product is from the biobased com鄉舊ponent and how much腦笑 is from the petroleum-derived com業用ponent. Thus by testi技都ng for carbon-14 it is紙亮 possible to qua章開ntify the bio-based ca還看rbon content of the刀他 product. A high醫鐵er carbon-14 content means a h坐劇igher biobased content. If 鐘木a product has a carbon-14 content匠制 of 100% biobased carbo線森n, it means that 100% of the raw 市劇materials used to produce the p市鐘roduct are biobas學很ed and no fossil raw m得多aterials are used.
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2023-06-19
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