应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2014年
11期
2115-2117
,共3页
湿法消解%铬%石墨炉原子吸收法%马铃薯
濕法消解%鉻%石墨爐原子吸收法%馬鈴藷
습법소해%락%석묵로원자흡수법%마령서
wet digestion%chromium%graphite furnace atomic absorption spectrometry( GFAAS)%pota-toes
采用石墨炉原子吸收光谱法测定马铃薯中铬含量，采用了一种新的前处理方法（硝酸+硫酸+过氧化氢）的湿法消解法，并与传统湿法消解法（硝酸+高氯酸）作对比。结果表明，新的湿法消解法测得铬的含量略高于传统消解法测得铬的含量，加标回收率在92.7%~99.2%，精密度RSD为1.7135%，都优于传统的湿法消解法，避免了危险性较大的高氯酸，且反应温和，操作安全，简单，消解完全，结果准确，可以作为选择方法在实际工作中应用推广。
採用石墨爐原子吸收光譜法測定馬鈴藷中鉻含量，採用瞭一種新的前處理方法（硝痠+硫痠+過氧化氫）的濕法消解法，併與傳統濕法消解法（硝痠+高氯痠）作對比。結果錶明，新的濕法消解法測得鉻的含量略高于傳統消解法測得鉻的含量，加標迴收率在92.7%~99.2%，精密度RSD為1.7135%，都優于傳統的濕法消解法，避免瞭危險性較大的高氯痠，且反應溫和，操作安全，簡單，消解完全，結果準確，可以作為選擇方法在實際工作中應用推廣。
채용석묵로원자흡수광보법측정마령서중락함량，채용료일충신적전처리방법（초산+류산+과양화경）적습법소해법，병여전통습법소해법（초산+고록산）작대비。결과표명，신적습법소해법측득락적함량략고우전통소해법측득락적함량，가표회수솔재92.7%~99.2%，정밀도RSD위1.7135%，도우우전통적습법소해법，피면료위험성교대적고록산，차반응온화，조작안전，간단，소해완전，결과준학，가이작위선택방법재실제공작중응용추엄。
Graphite furnace atomic absorption spectrometry was used to determine content of chromium, and a comparison was made between a new wet digestion( nitric acid,hydrogen peroxide and sulfuric acid)and traditional wet digestion( nitric acid and perchloric acid)for pretreatment. The results showed that the content of Cr measured with new wet digestion method is slightly higher than that of traditional di-gestion method measured chromium,the recovery rate was 92. 7% ~99. 2% and RSD of precision was 1. 713 5%,the new wet digestion method is better than the traditional,the larger risk of perchloric acid was avoided,and the mild reaction conditions,safe operation,simple,complete digestion,accurate,and can be used as a selection method was applied in practical work.
