Heavy metals in three lakes in West Poland.

Concentrations of heavy metals (Ni, Cr, Co, Zn, Mn, Pb, Cd, Cu, Hg, Fe) as well as macronutrients (P, Ca, Mg) were measured in water, bottom sediments, and plants of three lakes in West Poland (southwest of Poznan). The plants collected were Nymphaea alba, Nuphar luteum, Ceratophyllum demersum, Phragmites communis, Typha latifolia, and Schoenoplectus lacustris. These plants contained elevated levels of Co, Zn, Pb, Cd, Cr, and Hg. Analyses of water and bottom sediments indicated that the lakes were polluted with Zn, Cd, Cu, and Pb and partly with Ni and Hg. Strong positive correlations were found between concentrations of Cd in water and in plants, between concentrations of Cd in bottom sediments and in plants, between concentrations of Cr in water and in plants, between concentrations of Cr in bottom sediments and in plants, and between concentrations of Fe in water and in plants, indicating the potential of plants for pollution monitoring for these metals. A negative correlation was found between biomass production and Pb and Mn content in water and Pb and Mn content in bottom sediments. Cr and Cd accumulated in plants at a higher rate from bottom sediments than from water. The accumulation rate of Fe in plant tissues was higher with an increase in Fe in water than with an increase in Fe in bottom sediments.     

猕猴桃属8种植物根部必需元素的含量测定

采用等离子体发射光谱法测定了猕猴桃属８种植物根部中必需元素：Ｍｇ、Ｐ、Ｃａ、Ｚｎ、Ｆｅ、Ｃｕ、Ｍｏ、Ｎｉ、Ｃｒ、Ｍｎ、Ｃｏ的含量,结果表明Ｐ、Ｃａ、Ｍｇ、Ｚｎ、Ｆｅ含量较高,Ｍｏ、Ｍｎ次之,Ｎｉ、Ｃｕ、Ｃｒ、Ｃｏ含量较低     

原子吸收分光光度法测定赣产白术中微量元素

用原子吸收光度法测定白术中Zn、Fe、Cu、Mg、Cr、Mn、Pb、Cd、K、Ni、Co共11种元素的含量。其中Mg、K是人体的常量元素,Cu、Fe、Zn、Cr、Mn、Co、Ni是人体的必需微量元素,Pb、Cd是人体的非必需微量元素。结果表明,白术含有很多与人体密切相关的元素,具有较高的药用价值。     

地甲肿流行区智力低下儿童头发中14种元素分析

本文用ICP-AES法测定了地甲肿流行区63名儿童(其中智力低下患儿41名)头发中Zn、Pb、Fe、Cu、Mn、Ca、Mg、Al、Sr、Ni、Cr、Sn、Se、I 14种常、微量元素的含量。结果表明智力低下儿童头发中Zn、Pb、Ca、Ni、Cr明显低于非病区对照组,而Fe、Mn、Al则明显高于非病区对照组。提示地甲肿流行区智力低下的发生,碘缺乏不是唯一的病因,而是多种元素作用的结果。     

健康成人血清铜、铁、锌、镉、铅、锰、铬、钙、镁、钾含量的调查研究

应用原子吸收光谱分析法,测定了在南京从事不同作业的360名健康成人血清中Cu、Fe、Zn、Cd、Pb、Mn、Cr、Ca、Mg、K 10种元素的含量,经分组统计处理,探讨了不同工种、性别、年龄及工龄与血清元素水平的关系。结果表明,不同工种间血清Cu、Fe、Zn、Cr、Mn、Pb、Ca、Mg、K含量均有显著性差异;不同年龄段血清Cu、Zn、Cd、Mn、Pb、Mg含量有显著差异;女性血清Cu、Zn、Ca、K含量高于男性,而血清Cd低于男性;不同工龄间血清Cu、Fe、Zn、Cd、Cr、Pb、Mg含量有显著性差异。     

Heavy Metal Concentrations in Surficial and Core Sediments from Izmir Bay: An Assessment of Contamination and Comparison Against Sediment Quality Benchmarks

The levels of heavy metals were determined in surface and core sediments from the Izmir Bay in 2009. The highest concentrations of As, Cr, Cu, Ni, Pb and Zn were found in the inner bay due to industrial activities. In contrast, maximum levels of Mn, Co, Fe and Al were observed in the outer bay, due to geochemical structure. Cu, Pb, Zn, Ni, As, Cr and Co levels in the upper layer of core sediments were higher than the mean background values of bottom sediments. The enrichment of Cr, Mn, Pb, Zn, Cu and As in the bay seems to be driven by anthropogenic sources. It was found that the sediments in Izmir Inner Bay were generally polluted heavily with Cu, As, Ni, Cr, Pb and moderately with Zn according to the numerical Sediment quality guidelines of the USEPA.     

用F浮动逐步回归分析法研究儿童及青少年智力与生物元素含量的关系

对昆明市儿童及青少年共２１３人进行了智商测定，以头发为样品，测定了Ｐｂ、Ｃｄ、Ｃｒ、Ｃｏ、Ｎｉ、Ｍｎ、Ｃｕ、Ｆｅ、Ｚｎ、Ｋ、Ｎａ、Ｃａ、Ｍｇ和Ｐ的含量，以上述测定值及Ｚｎ／Ｃｕ、Ｃａ／Ｍｇ、Ｎａ／Ｋ、年龄、性别等１９项指标为自变量，用Ｆ浮动法进行多元逐步回归，筛选出对智商影响较明显的因素为Ｚｎ、Ｃｕ、Ｃｏ、Ｃｒ、Ｍｎ，其次为Ｃｄ及Ｎａ。提示各元素间的协同作用和拮抗作用对智力产生综合影响。     

Metal contents in epiphytic bryophytes in Kitakyushu area

Metal contents in epiphytic bryophytes growing at Yahata Nishi-ku, Kitakyushu City and its vicinity were measured. Measurements were made both on the contents in the plant body of a single species Clastobryella kusatsuensis and on those of the whole bryophytic community. Contents of eight elements (Fe, Zn, Mn, Cr, Pb, Ni, Cu and Cd) decrease generally with increase in distance from the center of the industrialized area. No such marked regional difference was seen in the contents of Ca and Mg. The ratios of seven kinds of elements (Fe, Mn, Cr, Pb, Ni, Cu and Cd) in bryophytes almost coincide with those in airborne particulates. It was proved that C. kusatsuensis and communities of bryophytes can be an indicator of air pollution by metals.     

山东7个地方鸡品种鸡蛋中矿物质元素含量的比较研究

用原子吸收光谱分析法测定了寿光鸡、琅琊鸡、日照麻鸡、鲁西斗鸡、芦花鸡、莱芜黑鸡、济宁百日鸡7个山东地方鸡品种鸡蛋中钙(Ca)、钠(Na)、钾(K)、镁(Mg)、铁(Fe)、锌(Zn)、铬(Cr)、铜(Cu)、锰(Mn)、铅(Pb)等10种矿物质元素的含量,其中前6种元素用火焰法测定,后4种元素用石墨炉法测定。用钼黄比色法测定7个山东地方鸡品种鸡蛋中磷(P)的含量。测定结果表明,在7个品种鸡蛋中,K含量最高,Na、P、Ca、Mg、Fe、Zn次之,而Cu、Cr、Mn相对较低,Pb的含量最低;7种鸡蛋相比较,莱芜黑鸡鸡蛋的K、P含量最高,百日鸡鸡蛋中Na、Ca、Mg含量最高,鲁西斗鸡鸡蛋含Fe、Zn、Mn、Cr量最高,寿光鸡、琅琊鸡鸡蛋Cu含量最高,寿光鸡、日照麻鸡鸡蛋Pb的含量最高。     

Toxic metals in aquatic plants surviving in surface water polluted by copper mining industry

Concentrations of the metals Al, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn, as well as the macronutrients N, P, K, Ca, Mg, and S were measured in water, sediments, and the aquatic macrophytes Potamogeton pectinatus and Myriophyllum spicatum, growing in surface water receiving sewages and solid wastes from a copper smelter and a copper ore processing factory located in the Legnica-Glogow copper district in Southwest Poland. The deposition of mineral wastes in this area belong to the largest repository in Europe. The plants were able to survive at heavily contaminated sites. The concentrations of Cd (up to 0.6-1.7 microg/L in water and up to 10.1-12.9 mg/kg in sediments), Cu (up to 29-48 microg/L in water and up to 4.6-5.6g/kg in sediments), Pb (up to 1.5-2.2 g/kg in sediments), and Zn (up to 167-200 microg/L in water and up to 1.4-1.8 g/kg in sediments) seriously exceeded background values. P. pectinatus was able to survive tissue concentrations (in mg/kg) of up to 920 Cu, 6240 Mn, 98 Co, and 59 Ni, while M. spicatum survived tissue concentrations up to 1040 Cu, 6660 Mn, and 57 Co for. Enrichment ratios of elements in plant tissue and in water were much higher than those between plant tissue and sediments.     

野生蔬菜大叶芹中14种无机元素的测定

目的通过检测野生蔬菜大叶芹中无机元素，了解其无机元素的含量情况。方法采用火焰原子吸收光谱法、石墨炉原子吸收光谱法和化学分析法，结合使用基体改进剂技术，依据国家标准进行测定。结果大叶芹中K、Na、Ca、Mg、Fe、Mn、Cu、Zn、Pb、Cr、Co、Ni、As等人体必需无机元素的含量分别为930、247、1270、894、187．7、9．4、9．0、15．80、〈0．10、0．89、〈0．10、〈0．50、〈0，10mg／kg，有害元素Cd含量为0．04mg／kg。结论野生蔬菜大叶芹中K、Na、Ca、Mg、Zn等人体必需的无机元素含量丰富，有较高的开发利用价值。同时也检测出有害元素Cd，说明此种野生山菜已受到了环境或土壤的污染。     

Sources of Heavy Metal Input Into Winam Gulf,Kenya

Water and surface sediment from rivers Kisat, Nyamasaria, Nyando, Sondu-Miriu, Kuja, Awach, Yala, and Nzoia, which flow into Winam Gulf, were analyzed for heavy metals in order to assess the influence of the catchment activities on heavy metal input into the lake. Sampling was done both upstream and at river mouths where the rivers entered in to the lake. The mean sediment concentration of exchangeable cations (in microg/g) for Ag, Cd, Co, Cu, Mn, Ni, Pb, Sn, and Zn ranged from 0.01 to 263 (for Mn at Kuja). Ag, Cr, and Cd were poorly leachable with 0.1 MHCl but the other cations were found to be fairly exchangeable. Most exchangeable cations in sediment ranged between 2% and 20% of the total heavy metal content obtained by digestion with strong acid. The mean total dissolved metal (0.45 microm filter cut-off) and mean total sediment concentrations ranged from nd-16 (Ag), nd-8 (Cd), nd-23.3 (Co), nd-50 (Cr), 5-157.5 (Cu), 50-3276 (Mn), nd-54.1 (Ni), 7-93.6 (Pb), 25-219.5 (Zn) in microg/L and from nd-8.34 (Ag), 0.48-1.75 (Co), nd-1.78 (Cd), 2.92-5.36 (Cr), 3.90-150.2 (Cu), 133.5-7237 (Mn), 4.33-42.29 (Ni), 3.09-66.06 (Pb), 23.39-7.83 (Sn) and 23.39-350.8 (Zn) in microg/g dry weight, respectively. The rivers analyzed were found to be non-polluted in terms of sediment loads except river Kisat which was found to be polluted because of elevated levels of Pb, Mn, Cu, and Zn. Nyamasaria and Nyando were also found to have higher concentrations of Pb, Cu, and Zn than those reported previously in the lake sediment. The dissolved metal concentrations were acceptable by WHO maximum limits in drinking water except Mn which was above WHO limit in Kisat, Nyando, and Nyamasaria waters. Enrichment of Cd and Pb was found in all the river sediment samples with factors ranging from 2.12 at Kisat river mouth to 4.41 at Awach (for Cd) and from 1.49 (at Kisat river mouth) to 2.38 (at Nyando river mouth).     

常、微量元素与胎儿宫内发育迟缓关系的研究

目的 探讨常、微量元素与胎儿宫内发育迟缓(IUGR)间的关系.方法 孕晚期测定71名孕妇母血、脐血、羊水中微量元素水平,其中IUGR组21例,对照组35例,巨大儿组15例.结果 IUGR组母血清Zn,Se,Mn,Fe,Mg,Cr明显低于对照组(P＜0.05);Cd,Pb,Ni水平明显高于对照组;巨大儿组母血清Fe含量亦明显低于对照组(P＜0.05);三组间Ca,Ti,Co,Li无明显差别.IUGR组脐血清Se,Mn,Cd,Fe,Cu,Mg明显低于对照组;Pb,Ni明显高于对照组;三组间Zn,Ca,Ti,Co,Li无明显差别.IUGR组羊水Zn,Se,Mn,Fe明显低于对照组,三组间Ca,Co无明显差别.结论 常、微量元素与胎儿发育关系密切,Zn,Se,Mn,Fe,Mg,Cu,Cr缺乏可致胎儿宫内发育迟缓,Cd,Pb,Ni升高可致低体重儿.     

Evaluation of qualitative properties of amaranth (Amaranthus)

The work contains results of determination of protein, fat, carbohydrates, water, ash, energy value, B group vitamins (B1, B2, PP, B6) and minerals (Ca, P, Mg, Fe, Na, K, Cu, Mn, Zn, Co, Ni, Cr, Cd, Pb) in three products of amaranth. The nutrients components were determined by general approved analytical methods. Vitamins group B were determined using microbiological methods. Minerals like Ca, Mg, Fe, Na, K, Cu, Mn, Zn, Co, Ni, Cr, Cd and Pb were determined using the flame AAS method. Phosphorus was determined spectrophotometrically as phosphates with ammonium molybdate. Mean percentage content of protein, fat, caborhydrates, water and ash in products of amaranth examined (seeds, meal, expanded seeds "popping") were: 13.5-14.4; 7.1-7.6; 63.8-71.7; 3.0-12.3; 3.1-3.4 respectively; there energy value expressed in Kcal/100 g were 373-412. Vitamins content in products of amaranth (mg/100 g) were: 0.019-0.029 thiamin; 0.100-0.143 riboflavin; 1.02-1.20 niacinamide and 0.563-0.615 pyridoxin. The levels (mg/100 g) of minerals were as follow: 204-223 Ca; 712-792 P; 8.3-9.7 Fe; 200-235 Mg; 2.9-3.1 Zn; 1.03-1.38 Cu; 3.78-4.54 Mn; 6.30-8.42 Na; 318-337 K; 0.040-0.055 Cr; 0.185-0.292 Ni and 0.045-0.051 Co. Mean contents of cadmium ranged 5-9 micrograms/100 g and lead 27-35 micrograms/100 g in examined products of amaranth.     

火焰原子吸收法测定潮州芡实中的矿质元素

用火焰原子吸收光谱法测定了潮州芡实中的K、Na、Ca、Mg、Cu、Zn、Mn、Fe、Ni、Pb、Cd等微量元素 ,为潮州芡实的开发提供了依据。各元素的回收率在 95 %～ 10 5 %。结果表明 ,潮州芡实中富含人体必需的微量元素及大量元素 ,有害元素Pb、Cd等含量较低。     

Springtime peaks of trace metals in Antarctic snow.

Drifting snow samples were collected at Asuka Station (71 degrees 32'S, 24 degrees 08'E, 930 m above sea level) over a period from July to December 1991; 36 elements (including Na, Mg, K, Ca, Fe, Al, Li, V, Cr, Mn, Co, Ni, Cu, Zn, Ga, Se, Rb, Sr, Cd, Pb, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Th) in snow were analyzed by inductively coupled plasma-mass spectrometry (ICP-MS) by direct sample introduction. Concentrations of Cl-, NO3-, and SO(4)2- in the snow were also determined by ion chromatography. In late September to early October, there was a pronounced peak concentration of most of the elements together with non-sea salt sulfate. Enrichment factor analyses suggest that Na, Mg, Ca, K, and Sr are of marine origin and Al, Fe, Mn, Rb, Cr, Ni, Ga, V, and all the rare earth elements are of crustal origins. Volcanic eruption of Mt. Pinatubo (June 1991) and Mt. Hudson (August 1991) could be the reason for the precipitation of Pb, Cd, Cu, Zn, and Se together with non-sea salt sulfates in the austral spring at Asuka Station.     

胡椒根金属元素含量分析

用硝酸和双氧水的混合消解液作为消解剂,采用微波消解技术处理胡椒根,火焰原子吸收光谱法测定了广东、海南、广西、云南四个产区胡椒根中锌、锰、铁、铜、钾、钠、钙、镁、镍、铅、铬等金属元素含量。结果表明,测定方法标准曲线线性较好(r=0.9956～0.9998),回收率在91%～119%之间,RSD在0.64%～6.01%之间,测定结果满意。不同产地胡椒根金属含量分布有差异,各地区的胡椒根中营养元素钾、钠、钙、镁、铁、锰含量普遍较丰富,广西和云南的胡椒根中铅含量稍高,但有害重金属元素铜、铅、铬的含量均低于限量标准。     

ICP—OES法同时测定中草药中18种微量元素

采用微波消解等离子体发射光谱法(ICP-OES)对10种中药中的18种微量元素Al、As、B、Ba、Ca、Cd、Cr、Cu、Fe、Mo、Mg、Mn、Na、Ni、P、Pb、Sr、Zn进行了测定。结果表明,除As、Cd、Mo、Pb外,各元素相对标准偏差(RSD)基本上小于5%;各元素的加标回收率在95%~106%之间。方法简便、快速、准确、可靠。     

黄芩不同部位金属元素的含量测定

用原子吸收分光光度法分别测定了黄芩根、茎、叶中１１种金属元素的含量。发现叶、茎中富含镁、铬、镍、铁、钾、锰元素；叶中镁、钾、铬、镍、钴、铁、锰、铅的含量明显高于根中，锌、钼的含量和根中接近；茎中锌、锰、钾、铅的含量远高于根中，钴、镍、铬、钼、铁的含量和根中接近。     

Differences in Concentration of Heavy Metals Between Native and Transplanted Plagiothecium denticulatum: A Case Study of Soils Contaminated by Oil Well Exudates in South East Poland

For a period of 60 days, the terrestrial moss Plagiothecium denticulatum was transplanted from a clean control site to a soil contaminated with crude oil exudates (Krosno, South East Poland). Native P. denticulatum growing on this contaminated soil was collected during the same period. Concentrations of the metals Al, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn as well as the macroelements N, P, K, Ca, Mg, and S were determined in P. denticulatum and in soils from the contaminated and control sites. Contaminated soil was the main contributor of Ba, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn to native and transplanted P. denticulatum. Other sources of contamination apart from the soil existed for Cd and Cu. Transplanted P. denticulatum accumulated significantly more Al, Cr, Cu, Ni, Pb, and Zn, and native P. denticulatum accumulated significantly more N, P, K, and Ca. Higher levels of N, P, K, and Ca in native P. denticulatum indicates a possible mechanism to prevent the loss of these elements as observed in the transplanted P. denticulatum.