榫欐簮鏈熷垔缃?/p>
http://www.qikan.com.cn
鍘熷瓙鍚告敹娉曟祴瀹氬ぇ绫崇矇涓晧鐨勪笉纭畾搴﹁瘎瀹?/p>
浣滆�咃細鐜嬫柊寤?/p>
榛勬稕
绉﹀濞?/p>
鏉ユ簮锛氥�婂尰瀛︿俊鎭�?/p>
2018
骞寸
16
鏈?/p>
鎽?/p>
; ;
瑕侊細鐩殑
;
閲囩敤鏃犵伀鐒板師瀛愬惛鏀舵硶瀵瑰ぇ绫崇矇涓殑闀夎繘琛屾祴瀹氥�傛柟娉?/p>
;
鍒嗘瀽娴嬮噺涓嶇‘瀹氱殑
涓昏鏉ユ簮锛屽湪鏁翠釜鍒嗘瀽娴嬪畾杩囩▼锛氱О閲忋�佸閲忓櫒鍏风殑浣撶Н銆佹爣鍑嗙墿璐ㄣ�佺洿绾垮洖褰掓柟绋嬨�侀噸澶嶆�?/p>
娴嬪畾鍜屼华鍣ㄧず鍊艰宸瓑鏄笉纭畾搴︾殑涓昏鏉ユ簮銆傜粨鏋?/p>
;
鎸夌収
JJF 1059.1-2012
銆婃祴閲忎笉纭畾搴﹁瘎
瀹氫笌琛ㄧず銆嬬殑瑙勫畾杩涜璇勫畾锛岃垗寮冭础鐚皬锛屽彲浠ュ拷鐣ヤ笉璁＄殑涓嶇‘瀹氬害鍒嗛噺锛屾渶缁堣绠楃粰鍑烘墿灞?/p>
涓嶇‘瀹氬害涓猴細
K=2
锛?/p>
U=48 渭g/
kg
锛?/p>
CCd=
锛?/p>
300.01卤
48.00
锛?/p>
渭g/kg
銆傜粨璁?/p>
;
璇ョ粨鏋滄洿鍔犲瑙傚拰鎺ヨ繎
鐪熷�硷紝闄嶄綆浜嗘娴嬫満鏋勭殑妫�娴嬮闄┿�?/p>
鍏抽敭璇嶏細鍘熷瓙鍚告敹娉?/p>
;
涓嶇‘瀹氬害
;
闀?/p>
;
澶х背绮?/p>
涓浘鍒嗙被鍙凤細
R714.22; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;
鏂囩尞鏍囪瘑鐮侊細
A; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; DOI
锛?/p>
10.3969/j.issn.1006-1959.2018.16.016
鏂囩珷缂栧彿锛?/p>
1006-1959
锛?/p>
2018
锛?/p>
16-0059-04
Evaluation of Uncertainty in Determination of Cadmium in Rice Flour by Atomic Absorption
Method
WANG Xin-jian
锛?/p>
HUANG Tao
锛?/p>
QIN Na-na
锛?/p>
Urumqi Center for Disease Control and Prevention
锛?/p>
Urumqi 830026
锛?/p>
Xinjiang
锛?/p>
China
锛?/p>
Abstract
锛?/p>
Objective; To determine the cadmium in rice flour by flame atomic absorption
spectrometry.Methods; Analyze the main sources of measurement uncertainty.Throughout the analysis
and measurement process
锛?/p>
weighing
锛?/p>
volume of volumetric instruments
锛?/p>
reference materials
锛?/p>
linear regression equations
锛?/p>
repeatability measurements and instrumental indication errors are the
main sources of uncertainty.Results; According to JJF 1059.1-2012"Measurement Uncertainty
Evaluation and Representation"
锛?/p>
the contribution is small
锛?/p>
the negligible uncertainty component is
discarded
锛?/p>
and the final calculation gives the extended uncertainty as
锛?/p>
K=2
锛?/p>
U=48渭g/kg
锛?/p>
CCd=
锛?/p>
300.01卤
48.00
锛?/p>
渭g/kg.Conclusion; The result is more objective and close to the true value
锛?/p>
which
reduces the detection risk of the testing organization.
Key words
锛?/p>
Atomic absorption method;Uncertainty;Cadmium;Rice flour
娴嬮噺涓嶇‘瀹氬害琛ㄥ緛鍚堢悊鍦拌祴浜堣娴嬮噺涔嬪�肩殑鍒嗘暎鎬э紝涓庢祴閲忕粨鏋滅浉鑱旂郴鐨勫弬鏁帮紝鐢卞涓垎
閲忕粍鎴?/p>
[1]
銆傚叾涓竴浜涘垎閲忓彲鐢ㄦ祴瀹氱粨鏋滅殑缁熻鍒嗗竷浼扮畻锛屽苟鐢ㄥ疄楠屾爣鍑嗗樊琛ㄥ緛
;
鍙︿竴浜涘垎閲忓垯