CAJ | 학술논문

　　目的提高原子吸收分光光度计-石墨炉法测定饮用水中总铬的精密度和灵敏度，并缩短试验时间。方法用磷酸二氢铵作基体改进剂。结果当磷酸二氢铵浓度在0.5%时，水样在原子化前将湿度降低至250℃，并在2秒内超速升至2500℃。则可快速得到试验结果，并且灵敏度高，精密度好。结论所检测的数据灵敏度高、准确度好，标准物质的测定值与标准值相吻合，标准曲线相关系数γ=0.999，检出限为0.48ug/L。
　　목적제고원자흡수분광광도계-석묵로법측정음용수중총락적정밀도화령민도，병축단시험시간。방법용린산이경안작기체개진제。결과당린산이경안농도재0.5%시，수양재원자화전장습도강저지250℃，병재2초내초속승지2500℃。칙가쾌속득도시험결과，병차령민도고，정밀도호。결론소검측적수거령민도고、준학도호，표준물질적측정치여표준치상문합，표준곡선상관계수γ=0.999，검출한위0.48ug/L。
Objective: Improve the atomic absorption spectrophotometer-Determination of total chromium in drinking water by graphite furnace method precision and sensitivity, and shorten the test time. Methods With two ammonium hydrogen phosphate as matrix modifier. Results When two hydrogen ammonium phosphate concentration in 0.5%, water samples in atomic before the humidity is reduced to 250 DEG C, and rose to 2500℃in 2 seconds for speeding. You can quickly get the test results, and high sensitivity, good precision. Conclusion The sensitivity of the detection data, the high accuracy, determination of standard substance of value is consistent with the standard value, the correlation coefficient of the standard curve ofγ=0.999, the detection limit is 0.48ug/L.