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准确度系指用该方法测定的结果与真实值或参考值接近的程度 准确度一般用回收率(%)表示 可用本法所得的结果与已知准确度的另一方法测定的结果进行比较验证 回收率(%)=(测得量/加入量)×100% 在规定范围内,至少用9个测定结果(3个浓度,每个浓度各3份)进行评价
90%~95% 90%~l100% 90%~105% 90%~110% 90%~115%
80%~120% 98%~102% 99.7%~100.3% 100% 不低于90%
2% 99.7%~100.3% 98%~102% 1% 0.2%
C2% 99.7%~100.3% 98%~102% 1% 0.2%
2% 99.7%~100.3% 98%~102% 1% 0.2%
99.7%~100.3% 80%~120% 98%~102% 100% 不低于90%
2% 99.7%~100.3% 98%~102% 1% 0.2%
C2% 99.7%~100.3% 98%~102% 1% 0.2%
99.7%~100.3% 80%~120% 98%~102% 100% 不低于90%
C2% 99.7%~100.3% 98%~102% 1% 0.2%
回收率(%)=22.50/15.00×100%=150.0% 回收率(%)=12.50/10.00×100%=125.0% 回收率(%)=(22.50-10.0)/12.50×100%=100.0% 回收率(%)=10.00/12.50×100%=80.0% 回收率(%)=(22.50-15.00)/12.50*100%=60.0%
80%~120% 98%~102% 99.7%~100.3% 100% 不低于90%
不低于90% 98%~102% 80%~120% 100% 99.7%~100.3%