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铁、锰、铜、锌混合标准溶液系列稳定性探讨 被引量:1
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作者 刘泽春 李培军 《中国卫生检验杂志》 北大核心 2014年第22期3332-3334,共3页
为了提高检测质量,确保检测结果的准确性,标准规定元素标准溶液浓度为1μg/ml-10μg/ml或适当浓度的标准工作液保存在0℃-5℃冰箱中,有效期为1个月[1],此规定中的适当浓度概念比较模糊,在日常监测工作中,铁、锰、铜、锌测定频率较高,经... 为了提高检测质量,确保检测结果的准确性,标准规定元素标准溶液浓度为1μg/ml-10μg/ml或适当浓度的标准工作液保存在0℃-5℃冰箱中,有效期为1个月[1],此规定中的适当浓度概念比较模糊,在日常监测工作中,铁、锰、铜、锌测定频率较高,经常使用浓度低于1μg/ml的标准使用液,每次实验均需分别配制标准系列,既耗时又费力,且标准溶液价格较贵,从而导致实验成本大量增加。 展开更多
关键词 铁、锰、铜、锌混合液 标准使用液 稳定性
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ICP-AES法测定钕铁硼镀镍溶液中的杂质元素含量 被引量:1
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作者 王晓红 杜亚静 +1 位作者 韩卫平 程星华 《材料保护》 CAS CSCD 2022年第5期190-193,共4页
建立了用电感耦合等离子体发射光谱法(ICP-AES)测定钕铁硼材料镀镍溶液中镉、锰、铬、铜、铁、钙、锌、铝、钴、钕、镨和铈12种杂质元素含量的方法;确定了仪器的最佳工作参数及各元素的分析谱线;通过采用基体匹配和简单的镀液稀释消除... 建立了用电感耦合等离子体发射光谱法(ICP-AES)测定钕铁硼材料镀镍溶液中镉、锰、铬、铜、铁、钙、锌、铝、钴、钕、镨和铈12种杂质元素含量的方法;确定了仪器的最佳工作参数及各元素的分析谱线;通过采用基体匹配和简单的镀液稀释消除了电镀液中大量存在的基体物质对待检测元素测定的光谱干扰。实验结果表明:本方法中12种待测元素线性关系良好,线性相关系数R>0.999,检出限为0.005~0.690μg/mL,精密度和回收率实验结果表明,本方法具有简便、快速、准确的优点,能够满足日常钕铁硼镀镍溶液中杂质元素的快速检测要求。 展开更多
关键词 ICP-AES 镀镍溶液 、锰、铬、铜铁、、锌、铝、钴、钕、镨和铈
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溶栓疗法对急性心肌梗死患者血清中铁锌铜锰硒含量变化的研究
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作者 郭晓玲 马国珍 张美兰 《中国医师杂志》 CAS 2002年第S1期-,共6页
对 34例急性心肌梗死患者 ,给予溶栓治疗。测定其血清中必需微量元素的含量。结果显示 :患者治疗前血清铁、锌、铜含量升高 ,而锰和硒含量降低 ;与对照组比较 ,二者差异有高度显著性 ,P <0 0 1;而治疗后血清铁、锌、铜、锰的含量均... 对 34例急性心肌梗死患者 ,给予溶栓治疗。测定其血清中必需微量元素的含量。结果显示 :患者治疗前血清铁、锌、铜含量升高 ,而锰和硒含量降低 ;与对照组比较 ,二者差异有高度显著性 ,P <0 0 1;而治疗后血清铁、锌、铜、锰的含量均出现降低 ,硒的含量则出现升高 ,与治疗前比较 ,二者差异有显著性或有高度显著性(P <0 0 5或P <0 0 1)。 展开更多
关键词 急性心肌梗死 血清 溶栓疗法 铁、、铜、锰、硒
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2021-2023年济南市济阳区生活饮用水检测结果分析
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作者 高木娣 花重艳 《中国卫生标准管理》 2024年第22期30-33,共4页
目的分析2021—2023年济阳区城乡生活饮用水检测结果,系统了解饮用水卫生基本状况,为加强饮用水安全管理工作提供依据和技术支持。方法根据《济南市城乡饮用水水质监测工作方案》选择济南市济阳区内的8个街道(含乡镇)为监测镇,2021—202... 目的分析2021—2023年济阳区城乡生活饮用水检测结果,系统了解饮用水卫生基本状况,为加强饮用水安全管理工作提供依据和技术支持。方法根据《济南市城乡饮用水水质监测工作方案》选择济南市济阳区内的8个街道(含乡镇)为监测镇,2021—2023年连续3年采集济南市济阳区内生活饮用水样本合计60份,检测其铁、锰、铜、锌含量,并加以分析。结果监测镇内生活饮用水中铁、锰、铜、锌含量2021年、2022年均在国家标准范围内,符合饮用水卫生标准。2022年铁、锰含量有升高趋势,但仍在标准限值内。2023年有2个监测点(10%)的铁含量超出限值范围(0.30 mg/L),分别为2023S008号0.370 mg/L与2023S0019号0.420 mg/L。结论监测点内生活饮用水未被锰、铜、锌污染,但铁含量逐年升高,可能存在风险,应引起重视。 展开更多
关键词 生活饮用水 铁、锰、铜、锌检测 火焰原子吸收法 污染 检测 济阳区
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番茄对氮磷钾及中微量元素的吸收规律研究 被引量:21
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作者 褚屿 骆洪义 +5 位作者 林举梅 左世福 张喜琦 陈堂鑫 徐震 王志远 《中国土壤与肥料》 CAS CSCD 北大核心 2021年第1期247-255,共9页
通过田间试验研究了番茄生长过程中对氮、磷、钾及中微量元素的吸收分配规律。通过试验,测定番茄各个时期根系、茎秆、叶片、果实中氮、磷、钾、钙、镁、铁、锰、铜、锌的含量,旨在发现番茄各时期矿质元素的吸收规律。研究表明:随番茄... 通过田间试验研究了番茄生长过程中对氮、磷、钾及中微量元素的吸收分配规律。通过试验,测定番茄各个时期根系、茎秆、叶片、果实中氮、磷、钾、钙、镁、铁、锰、铜、锌的含量,旨在发现番茄各时期矿质元素的吸收规律。研究表明:随番茄生长发育的进行,氮、磷、钾及中微量元素在根、茎、叶中的分配率均呈降低的趋势,而果实中各元素分配率持续提高。至番茄成熟期果实中氮、磷、钾分配率分别达44.89%、56.73%、54.25%,钙、镁分配率分别达19.9%、53.9%,铁、锰、铜、锌分配率分别达31.8%、19.0%、27.8%、9.0%。番茄全生育期吸收钾最多,氮次之,磷最少,全生育期对氮、磷、钾吸收比例为3.0∶1.0∶4.7;对钙、镁吸收比例为8.1∶1;番茄全生育期对铁需求较大,锌、锰次之,铜最少,吸收比例为38.6∶2.9∶1∶2.0。 展开更多
关键词 番茄 氮、磷、钾 钙、镁 铁、锰、铜、锌 吸收分配
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Spatial Differentiation of Elements in Soils on Red-Earthy Hill Landscape of Central China 被引量:1
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作者 CHENZHI-CHENG ZHAOWEN-JUN 《Pedosphere》 SCIE CAS CSCD 1991年第2期127-136,共10页
Samples of 21 soil profiles and 165 top soils from an area of approximate 1.5km^2 on red-earthy hill landscape were collected and analysed.The content of Ca,Mg,K,P,Fe,Mn,Zn and Cu in soils relate with the kind of pare... Samples of 21 soil profiles and 165 top soils from an area of approximate 1.5km^2 on red-earthy hill landscape were collected and analysed.The content of Ca,Mg,K,P,Fe,Mn,Zn and Cu in soils relate with the kind of parent material and the position of topography,however,there is great variation due to the local difference of the form of soil utilization.From the difference in spatial distribution of elements content,it is believed that eight kinds of elements are lost by chemical leaching and physical translocation,meanwhile some are added (such as Ca,P,K,Mg) and some mobilized (such as Fe,Mn,Zn,Cu and P) through cultivation,fertilization and irrigation in the soils on the landscape investigated.The sectional differentiation in abundance or deficiency of elements in top soils on the landscape investigated is distinct,which is important for carrying out agricultural management and reasonable fertilization according to local conditions. 展开更多
关键词 contents of Ca Mg K P Fe Mn Zn and Cu geochemical behavior sectional differentiation
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Effects of Copper and Manganese on Hemocyte Apoptosis and Antagonism of Iron and Zinc in Oreochromis niloticus 被引量:1
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作者 白丽蓉 赵志英 《Agricultural Science & Technology》 CAS 2016年第3期684-689,共6页
This study aimed to investigate the effects of copper and manganese on hemocyte apoptosis and the antagonism of iron and zinc in Oreochromis niloticus The heavy metal contents in fish blood and feed were determined by... This study aimed to investigate the effects of copper and manganese on hemocyte apoptosis and the antagonism of iron and zinc in Oreochromis niloticus The heavy metal contents in fish blood and feed were determined by atomic absorption spectrophotometry, and the hemocyte apoptosis was determined by flow cytometry. A total of 360 tilapias were selected, and they were divided randomly and evenly into 12 groups. In the challenge groups, the tilapias were fed with con stant-level copper sulfate(0, 200 mg/kg) and manganese sulfate(0, 120 mg/kg); in the antagonism groups, the tilapias were fed with constant-level zinc sulfate(20320 mg/kg) and iron sulfate(150, 350 mg/kg). After 20-week aquaculture, the hemocyte apoptosis rates in the copper and manganese groups were significantly increased; with the increased addition levels of iron and zinc, the hemocyte apopto sis rates in the iron and zinc groups were significantly reduced, but they were stil higher than that in the control group. In conclusion, excessive copper and manganese can cause apoptosis in hemocytes of O. niloticus. However, the toxic effects of copper and manganese can be antagonized by iron and zinc. 展开更多
关键词 Oreochromis niloticus APOPTOSIS COPPER MANGANESE IRON ZINC
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Distribution of Soil Zinc,Iron,Copper and Manganese Fractions and Its Relationship with Plant Availability 被引量:13
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作者 ZOUBANG-JI MORUN-CANG 《Pedosphere》 SCIE CAS CSCD 1995年第1期35-44,共10页
The distribution of various fractions of Zn, Fe, Cu and Mn in 15 types of sods in China and its rela-tionship with plant availability were studied. Wactions of various elements were found to have some similarcharacter... The distribution of various fractions of Zn, Fe, Cu and Mn in 15 types of sods in China and its rela-tionship with plant availability were studied. Wactions of various elements were found to have some similarcharacteristic distribution regularities in wirious types of soils, but various soil types derered to varyingdegrees in the distribution of each fraction. Soil physico-chemical properties, such as pH, CEC and thecontents of OM, CaCO_3, free Fe, free Mn and P_2O_5, were signdicantly correlated with the distribution ofelemental fractions, and a significazit correlation also existed between the distribution and plant amilabilityof elemental fractions. Varfous fractions of each element were divided into two groups bed on their plantavailability. The correlation between the distribution of combination fractions aiid plaxit availability indi-cated a significantly or an extremely significantly positive correlation for Group I but a significantly or anextremely significantly negative correlation for Group II. Therefore, the fractions in Group I were primarypools of available nutrients, while those in Group II could hardly provide available nutrients for plants. Descreasing the transformation of corresponding elements into fractions of Group 11 and increasing the storagecapacity of various fractions of Group I were an important direction for regulation and controiling of soilnutrients. However, some Particular soils with too high contents of Zn, Fe, Cu and Mn should be regulatedand controlled adversely 展开更多
关键词 awtlabilityi distribution SOILS Zn Fe Cu and Mn fractions
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微波等离子体-原子发射光谱仪(MP-AES)测定葡萄酒中10种金属元素方法 被引量:4
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作者 于趁 姚春毅 +3 位作者 马育松 侯兰静 剧京亚 张云鹏 《食品科技》 CAS 北大核心 2016年第3期306-310,共5页
采用常压消解-微波等离子体原子发射光谱仪(MP-AES)测定了葡萄酒中铅、镉、锰、铁、铜、锌、钒、铝、铬、镍10种金属元素,实验结果表明,标准曲线均有良好线性关系,10种元素方法回收率为85.0%-120.5%,RSD%为0.41%-3.12%。方法简便快捷... 采用常压消解-微波等离子体原子发射光谱仪(MP-AES)测定了葡萄酒中铅、镉、锰、铁、铜、锌、钒、铝、铬、镍10种金属元素,实验结果表明,标准曲线均有良好线性关系,10种元素方法回收率为85.0%-120.5%,RSD%为0.41%-3.12%。方法简便快捷、成本低廉。 展开更多
关键词 微波等离子体原子发射光谱仪(MP-AES) 常压消解 葡萄酒 铅、镉、锰铁、铜、、钒、铝、铬、镍
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