CAJ | 학술논문

为便捷快速地定量水溶肥料中的磷和钾，采用 ICP-OES 法测定水溶肥料中的磷和钾，并与传统的定量方法———重量法和火焰光度法进行比较。结果表明：在检测功率为1 kW、等离子气流量为15 L／min、辅助气流量为1．5 L／min、雾化气压力为200 kPa、观察高度为10 mm、磷的检测波长为213．618 nm、钾的检测波长为766．491 nm 条件下，磷和钾在0～100 mg／L 的线性关系 R 值分别为1．00和0．999，ICP 对磷和钾的检出限、准确度和精密度分别为0．0609 mg／L、0．0546 mg／L、0．0914 mg／L 和0．0432 mg／L、0．148 mg／L、0．0350 mg／L。ICP 法与重量法对磷、钾的测定结果均不存在显著差异，采用火焰光度法测定水溶肥料中的钾含量偏高，且与 ICP 法和重量法存在显著差异。
위편첩쾌속지정량수용비료중적린화갑，채용 ICP-OES 법측정수용비료중적린화갑，병여전통적정량방법———중량법화화염광도법진행비교。결과표명：재검측공솔위1 kW、등리자기류량위15 L／min、보조기류량위1．5 L／min、무화기압력위200 kPa、관찰고도위10 mm、린적검측파장위213．618 nm、갑적검측파장위766．491 nm 조건하，린화갑재0～100 mg／L 적선성관계 R 치분별위1．00화0．999，ICP 대린화갑적검출한、준학도화정밀도분별위0．0609 mg／L、0．0546 mg／L、0．0914 mg／L 화0．0432 mg／L、0．148 mg／L、0．0350 mg／L。ICP 법여중량법대린、갑적측정결과균불존재현저차이，채용화염광도법측정수용비료중적갑함량편고，차여 ICP 법화중량법존재현저차이。
P and K elements in water-soluble fertilizers were determined by ICP-OES and traditional quantitative methods (the gravimetric method and flame photometry method)respectively to find out the convenient and fast quantitative method for determining P and K in water-soluble fertilizers.The results showed that when P and K concentration is 0-1 000 mg/L,the R value (linear correlation)of P and K elements is 1.00 and 0.999 respectively by using ICP-OES under the conditions including 1kw of power, 15L/min of plasma gas flow,1.5L/min of auxiliary flow,200kPa of atomised barometric pressure,10 mm of observation height and 213.618 nm wavelength for P and 766.491 nm wavelength for K,and the detection limit,accuracy and precision of P and K by using ICP-OES are 0.0609mg/L,0.054 6 mg/L and 0.091 4 mg/L,and 0.043 2 mg/L,0.148 mg/L and 0.035 0 mg/L separately.There is no significant difference in determination of P and K content between ICP-OES and the gravimetric method but K content of water-soluble fertilizers determined by the flame photometry method is high,and there is significant difference in determination of K content between the flame photometry method and other two methods.