CAJ | 학술논문

建立了同时测定进口天然气中氟、氯含量的离子色谱法。试样经活性炭吸附后,在160~180℃的温度下进行水蒸气蒸馏,试液中的氟和氯随着水蒸气逸出并被NaOH吸收液吸收,与基体和其他元素分离,吸收液中的氟和氯用离子色谱法测定。以高容量IonPac ? AS23型阴离子分离柱(4 mm ×250 mm)和IonPac ? AG23型保护柱(4 mm ×50 mm)为色谱柱,20 mmol/L NaOH溶液为淋洗液,用电导检测器检测。结果表明,氟和氯含量在1~25μg/mL范围内与相应的峰面积呈良好的线性关系,相关系数( R)分别为1.0000和0.9996,样品中氟、氯测定结果具有较高精密度,加标回收率均达到95%以上。
건립료동시측정진구천연기중불、록함량적리자색보법。시양경활성탄흡부후,재160~180℃적온도하진행수증기증류,시액중적불화록수착수증기일출병피NaOH흡수액흡수,여기체화기타원소분리,흡수액중적불화록용리자색보법측정。이고용량IonPac ? AS23형음리자분리주(4 mm ×250 mm)화IonPac ? AG23형보호주(4 mm ×50 mm)위색보주,20 mmol/L NaOH용액위림세액,용전도검측기검측。결과표명,불화록함량재1~25μg/mL범위내여상응적봉면적정량호적선성관계,상관계수( R)분별위1.0000화0.9996,양품중불、록측정결과구유교고정밀도,가표회수솔균체도95%이상。
The determination method of both fluoride and chloride content of import natural gas by ion chroma-tography had been established. Fluoride and chloride were separated through the distillation and absorbed by NaOH solution after samples of natural gas were absorbed by acticarbon at 160~180 ℃. Then they were tested by ion chro-matography. The equipment conditions were as follows:IonPac ? AS23 anion separation column(4 mm × 250 mm) , IonPac ? AG23 protect column (4 mm × 50 mm),20 mmol/L NaOH solution as eluent and conductivity detector. The signal values of fluoride and chloride had a good linear relationship with peak area with 1 . 000 0 and 0 . 999 6 for either correlation coefficient, when fluoride and chloride concentration was between 1μg/mL and 25μg/mL. The re-coveries could reach 95% above with high precision.