CN106290435A - 一种淀粉食品中重金属成分快速检测方法 - Google Patents
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 24
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- 235000019698 starch Nutrition 0.000 title claims abstract description 15
- 239000008107 starch Substances 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 18
- 238000001228 spectrum Methods 0.000 claims abstract description 18
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 238000004876 x-ray fluorescence Methods 0.000 claims abstract description 16
- 239000012086 standard solution Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000706 filtrate Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims abstract description 4
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- 206010010356 Congenital anomaly Diseases 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
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- G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
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Abstract
本发明提供一种淀粉食品中重金属成分快速检测方法,包括以下步骤:第一步;将淀粉食品进行打碎加水混合待用;第二步,建立重金属含量检测模型:第三步,将第一步得到的混合物进行过筛200目,进行过滤,过滤后的滤液保留;第四步将,第三步得到的液体混合物X射线进行照射,得到液态食品的X射线荧光光谱;根据液态食品的X射线荧光光谱与标准溶液的X射线荧光光谱的对应关系,得到液态食品的重金属含量。本发明克服了现有技术的不足,该方法使得各标准溶液之间的重金属含量成等差数列,提高了样品的选择性;而且得到的检测模型在各成分位置分辨力相同,置信区间相同,提高了测量结果的可信度。
Description
技术领域
本发明涉及食品安全检测技术领域,具体涉及淀粉食品中重金属成分快速检测方法。
背景技术
相对密度在4.5g/cm3以上的金属,称作重金属。原子序数从23(V)至92(U)的天然金属元素有60种,除其中的6种外,其余54种的相对密度都大于4.5g/cm3,因此从相对密度的意义上讲,这54种金属都是重金属。但是,在进行元素分类时,其中有的属于稀土金属,有的划归了难熔金属,最终在工业上真正划入重金属的为10种金属元素:铜、铅、锌、锡、镍、钴、锑、汞、镉和铋。这10种重金属除了具有金属共性及密度大于5以外,并无其他特别的共性。各种重金属各有各的性质。
重金属对人体的伤害常见的有:
铅:是重金属污染中毒性较大的一种,一但进入人体很难排除。直接伤害人的脑细胞,特别是胎儿的神经板,可造成先天大脑沟回浅,智力低下;对老年人造成痴呆、脑死亡等;
锌:过量时会得锌热病;
锡:与铅是古代巨毒药“鸩”中的重要成分,入腹后凝固成块,使人至死;
钴:能对皮肤有放射性损伤;
锑:与砷能使银手饰变成砖红色,对皮肤有放射性损伤;
汞:食入后直接沉入肝脏,对大脑视力神经破坏极大。天然水每升水中含0.01毫克,就会强烈中毒。含有微量的汞饮用水,长期食用会引起蓄积性中毒;
镉:导致高血压,引起心脑血管疾病;破坏骨钙,引起肾功能失调;如果误食含有重金属的食品将对人体产生很大的毒副作用,因此,检测食品中是否含有重金属,是关系到食品安全,生存质量的关键问题。现行的传统检测方法成本较高、效率较低,尤其是采用强酸消解样品的方法存在一定的污染。
发明内容
(一)解决的技术问题
针对现有技术的不足,本发明提供了淀粉食品中重金属成分快速检测方法,克服了现有技术的不足,该方法使得各标准溶液之间的重金属含量成等差数列,提高了样品的选择性;而且得到的检测模型在各成分位置分辨力相同,置信区间相同,提高了测量结果的可信度。
(二)技术方案
为实现以上目的,本发明通过以下技术方案予以实现:
一种淀粉食品中重金属成分快速检测方法,包括以下步骤:第一步;将淀粉食品进行打碎加水混合待用;
第二步,建立重金属含量检测模型:选择重金属含量成等差数列的标准溶液,采用X射线进行照射,得到标准溶液的X射线荧光光谱;建立X射线荧光光谱与重金属含量之间的多元校正检测模型;
第三步,将第一步得到的混合物进行过筛200目,进行过滤,过滤后的滤液保留;
第四步将,第三步得到的液体混合物X射线进行照射,得到液态食品的X射线荧光光谱;根据液态食品的X射线荧光光谱与标准溶液的X射线荧光光谱的对应关系,得到液态食品的重金属含量。
所述的第一步在真空条件下进行的。
所述的第三步将混合物料进行再粉碎后过筛。
所述的第三步粉碎时要进行恒温加热处理,温度控制在30-40度。
(三)有益效果
本发明实施例提供了淀粉食品中重金属成分快速检测方法。具备以下有益效果:该方法使得各标准溶液之间的重金属含量成等差数列,提高了样品的选择性;而且得到的检测模型在各成分位置分辨力相同,置信区间相同,提高了测量结果的可信度。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明实施例提供了具体实施方式,一种淀粉食品中重金属成分快速检测方法,包括以下步骤:第一步;将淀粉食品进行打碎加水混合待用;第一步是在真空条件下进行的,这样避免在打碎时的高温下情况下,里面的物料发生变质或其他氧化;
第二步,建立重金属含量检测模型:选择重金属含量成等差数列的标准溶液,采用X射线进行照射,得到标准溶液的X射线荧光光谱;建立X射线荧光光谱与重金属含量之间的多元校正检测模型;
第三步,将第一步得到的混合物进行过筛200目,进行过滤,过滤后的滤液保留;所述的第三步将混合物料进行再粉碎后过筛,所述的第三步粉碎时要进行恒温加热处理,温度控制在30-40度;提高处理的速度,提高检测效率;
第四步将,第三步得到的液体混合物X射线进行照射,得到液态食品的X射线荧光光谱;根据液态食品的X射线荧光光谱与标准溶液的X射线荧光光谱的对应关系,得到液态食品的重金属含量。
该方法使得各标准溶液之间的重金属含量成等差数列,提高了样品的选择性;而且得到的检测模型在各成分位置分辨力相同,置信区间相同,提高了测量结果的可信度。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个......”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技方案的精神和范围。
Claims (4)
1.一种淀粉食品中重金属成分快速检测方法,其特征在于包括以下步骤:第一步;将淀粉食品进行打碎加水混合待用;
第二步,建立重金属含量检测模型:选择重金属含量成等差数列的标准溶液,采用X射线进行照射,得到标准溶液的X射线荧光光谱;建立X射线荧光光谱与重金属含量之间的多元校正检测模型;
第三步,将第一步得到的混合物进行过筛200目,进行过滤,过滤后的滤液保留;
第四步将,第三步得到的液体混合物X射线进行照射,得到液态食品的X射线荧光光谱;根据液态食品的X射线荧光光谱与标准溶液的X射线荧光光谱的对应关系,得到液态食品的重金属含量。
2.根据权利要求1所述的一种淀粉食品中重金属成分快速检测方法,其特征在于:所述的第一步在真空条件下进行的。
3.根据权利要求2所述的一种淀粉食品中重金属成分快速检测方法,其特征在于:所述的第三步将混合物料进行再粉碎后过筛。
4.根据权利要求3所述的一种淀粉食品中重金属成分快速检测方法,其特征在于:所述的第三步粉碎时要进行恒温加热处理,温度控制在30-40度。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006220432A (ja) * | 2005-02-08 | 2006-08-24 | Mitsubishi Electric Corp | 重金属の分析方法 |
US20090262890A1 (en) * | 2005-08-23 | 2009-10-22 | Yoshiyuki Tani | X-ray fluorescence analysis to determine levels of hazardous substances |
CN103698352A (zh) * | 2014-01-08 | 2014-04-02 | 四川出入境检验检疫局检验检疫技术中心 | 皮革重金属色谱分析的标准溶液母液和标准曲线制备方法 |
CN103776859A (zh) * | 2013-10-14 | 2014-05-07 | 无锡艾科瑞思产品设计与研究有限公司 | 一种液态食品重金属含量快速检测方法 |
US20160123910A1 (en) * | 2014-11-04 | 2016-05-05 | Amorepacific Corporation | Method for quantitative analysis of heavy metals |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006220432A (ja) * | 2005-02-08 | 2006-08-24 | Mitsubishi Electric Corp | 重金属の分析方法 |
US20090262890A1 (en) * | 2005-08-23 | 2009-10-22 | Yoshiyuki Tani | X-ray fluorescence analysis to determine levels of hazardous substances |
CN103776859A (zh) * | 2013-10-14 | 2014-05-07 | 无锡艾科瑞思产品设计与研究有限公司 | 一种液态食品重金属含量快速检测方法 |
CN103698352A (zh) * | 2014-01-08 | 2014-04-02 | 四川出入境检验检疫局检验检疫技术中心 | 皮革重金属色谱分析的标准溶液母液和标准曲线制备方法 |
US20160123910A1 (en) * | 2014-11-04 | 2016-05-05 | Amorepacific Corporation | Method for quantitative analysis of heavy metals |
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