海洋环境科学
海洋環境科學
해양배경과학
MARINE ENVIRONMENTAL SCIENCE
2001年
1期
55-59
,共5页
110mAg%化学形态%测定方法%海水
110mAg%化學形態%測定方法%海水
110mAg%화학형태%측정방법%해수
描述了海水中110mAg的化学形态和测定方法的研究。实 验和理论 计算表明，海水中110mAg以110mAgCl-2∶110mAg+≈105 ，以及当〔Ag+〕〔Cl-〕≥1.56×1010时，可生成AgCl沉淀。据此，建立 了海水中110mAg的测定方法，方法包括按1 L海水加入稳定Ag+载体20 mg制成AgCl 沉淀，再用低本底γ谱仪测量。方法回收率80%以上，最低检出限为1.06×10-4 Bq/ L。用此方法首次测定了天然海水中的110mAg，测定结果与预期结果一致，表明该方 法简单、快速和准确。
描述瞭海水中110mAg的化學形態和測定方法的研究。實 驗和理論 計算錶明，海水中110mAg以110mAgCl-2∶110mAg+≈105 ，以及噹〔Ag+〕〔Cl-〕≥1.56×1010時，可生成AgCl沉澱。據此，建立 瞭海水中110mAg的測定方法，方法包括按1 L海水加入穩定Ag+載體20 mg製成AgCl 沉澱，再用低本底γ譜儀測量。方法迴收率80%以上，最低檢齣限為1.06×10-4 Bq/ L。用此方法首次測定瞭天然海水中的110mAg，測定結果與預期結果一緻，錶明該方 法簡單、快速和準確。
묘술료해수중110mAg적화학형태화측정방법적연구。실 험화이론 계산표명，해수중110mAg이110mAgCl-2∶110mAg+≈105 ，이급당〔Ag+〕〔Cl-〕≥1.56×1010시，가생성AgCl침정。거차，건립 료해수중110mAg적측정방법，방법포괄안1 L해수가입은정Ag+재체20 mg제성AgCl 침정，재용저본저γ보의측량。방법회수솔80%이상，최저검출한위1.06×10-4 Bq/ L。용차방법수차측정료천연해수중적110mAg，측정결과여예기결과일치，표명해방 법간단、쾌속화준학。
This paper present a study on the chemical species and det ermination method of 110mAg in seawater. The experiment and theo retical calculation indicate that 110mAg exist as 110mAgCl-2∶110mAg+≈105 in seawater and AgCl precipitation is produced when 〔Ag+〕〔Cl-〕≥1.56×10-10. Based on the result, a de termination method of 110mAg in seawater was estableshed. The me t hod includes producted 110mAgCl- precipitation by adding 20 mg Ag+ into 1L of seawater and 110mAg determined with a low Back grou nd γ-spectrometry. It's recovery is above 80%. The minimum detectable limit fo r 110mAg is 1.06×10-4 Bq/L, 110mAg in nat ure seawater was determined for the first time by this method and the s atisfactory results were got. It shows that the method is quite accurate, simpl e and prompt.
