Annali di chimica最新文献_第8页

Analytical Properties of p-[N,N-BIS(2-Chloro Ethyl) Amino] Benzaldehyde Thiosemicarbazone: Spectrophotometric Determination of Copper(II) in Alloys, Complexes and Pharmaceutical Samples 对[N,N- bis(2-氯乙基)氨基]苯甲醛硫代氨基脲的分析性质:分光光度法测定合金、配合物和药物样品中的铜(II

Annali di chimica Pub Date : 2007-07-02 DOI: 10.1002/adic.200790064

J. Karthikeyan, P. Parameshwara, A. Nityananda Shetty

引用次数: 0

Seasonal and Water Column Trends of the Relative Role of Nitrate and Nitrite as *OH Sources in Surface Waters 地表水中硝酸盐和亚硝酸盐作为*OH源相对作用的季节和水柱变化趋势

Annali di chimica Pub Date : 2007-07-02 DOI: 10.1002/adic.200790054

Davide Vione, Claudio Minero, Valter Maurino, Ezio Pelizzetti

{"title":"Seasonal and Water Column Trends of the Relative Role of Nitrate and Nitrite as *OH Sources in Surface Waters","authors":"Davide Vione, Claudio Minero, Valter Maurino, Ezio Pelizzetti","doi":"10.1002/adic.200790054","DOIUrl":"10.1002/adic.200790054","url":null,"abstract":"Based on literature data of sunlight spectrum, photolysis quantum yields, and absorption spectra, the relative role of nitrite and nitrate as *OH sources in surface waters was assessed, and its dependence on the season and the depth of the water column studied. In the majority of surface water samples (river, lake and seawater) nitrite is expected to play a more important role as *OH source compared to nitrate, in spite of the usually lower [NO2-] values. Interestingly, under the hypothesis of a constant ratio of the concentrations of nitrate and nitrite (to be corrected later on for the actual concentration ratio in a given sample), the relative role of nitrite compared to nitrate would be minimum in summer, at noon, in the surface layer of natural waters. Any decrease in the sunlight intensity that can be experienced in the natural environment (different season than summer, water column absorption, time of the day other than the solar noon), with its associated influence on the sunlight spectrum, would increase the relative role of nitrite compared to nitrate.","PeriodicalId":8193,"journal":{"name":"Annali di chimica","volume":"97 8","pages":"699-711"},"PeriodicalIF":0.0,"publicationDate":"2007-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/adic.200790054","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40998558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Potentiometric Studies of Binary and Ternary Complexes Involving Cadmium(II) and Nitrilo-Tris(Methyl Phosphonic Acid) with Amino Acids, peptides and DNA Constituents 镉(II)和硝基膦酸(Nitrilo-Tris)二元和三元配合物与氨基酸、肽和DNA组分的电位测定研究

Annali di chimica Pub Date : 2007-07-02 DOI: 10.1002/adic.200790057

Azza A. Shoukry, Mohamed M. Shoukry

引用次数: 3

The Information Content of Visible Spectra of Extra Virgin Olive Oil in the Characterization of Its Origin 特级初榨橄榄油可见光谱在产地鉴定中的信息含量

Annali di chimica Pub Date : 2007-07-02 DOI: 10.1002/adic.200790047

Michele Forina, Raffaella Boggia, Monica Casale

{"title":"The Information Content of Visible Spectra of Extra Virgin Olive Oil in the Characterization of Its Origin","authors":"Michele Forina, Raffaella Boggia, Monica Casale","doi":"10.1002/adic.200790047","DOIUrl":"10.1002/adic.200790047","url":null,"abstract":"The information content of visible spectra has been evaluated, by means of some selected chemometrical techniques, for its ability to trace the geographical origin of extra virgin olive oils coming from several Mediterranean regions. Special attention was paid to extra virgin olive oil produced in West Liguria, a North Italy region which leans over the Mediterranean Sea and borders France. The peculiar organoleptic features of this “niche product” deserved the protected designation of origin “Riviera Ligure-Riviera dei fiori”. Unfortunately, this expensive oil is often submitted to profitable adulterations, commonly involving addition of other cheaper Mediterranean oils. Using suitable transforms, such as profiles and derivatives, the visible spectra of extra virgin olive oils showed a very important discriminant power in that regards the geographical characterization of the studied samples. In particular, the developed class models for West Liguria oils have 100% sensitivity and specificity. Moreover, even if this paper is focused on West Liguria oil, it is important to emphasize that a similar study, involving a so widespread and timesaving technique, could be analogously developed for all the other Mediterranean regions taken into account and it could be used in other olive oil characterization problems.","PeriodicalId":8193,"journal":{"name":"Annali di chimica","volume":"97 8","pages":"615-633"},"PeriodicalIF":0.0,"publicationDate":"2007-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/adic.200790047","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40999159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 23

The Russian Avant-Garde Painting Palette Documentary and Physicochemical Study of Inorganic Colorants 俄罗斯先锋派绘画调色板纪实及无机着色剂的理化研究

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790030

Elli Kampasakali Ph.D. Candidate, Zoe Eirini Papliaka Postgraduate Student, Dimitirios Christofilos Lecturer, Evangelia A. Varella Assistant Professor

{"title":"The Russian Avant-Garde Painting Palette Documentary and Physicochemical Study of Inorganic Colorants","authors":"Elli Kampasakali Ph.D. Candidate, Zoe Eirini Papliaka Postgraduate Student, Dimitirios Christofilos Lecturer, Evangelia A. Varella Assistant Professor","doi":"10.1002/adic.200790030","DOIUrl":"10.1002/adic.200790030","url":null,"abstract":"In the present article an attempt is being made to elucidate the inorganic colorants encountered in the Russian avant-garde painting palette by a combined art historical, documentary and physicochemical investigation; and to examine the influence of environmental factors on the chromatic profile originally sought by the artist. The overall approach based on written sources is confirmed by measurements on representative paintings from the Costakis Collection in the State Museum for Contemporary Art, Thessaloniki. The documentary research deals with the influences of Orthodox iconography, folkloric art, and occidental modernist tendencies on the Russian avant-garde palette; and is studying the effects of contradictory historical processes in the chromatic profile of individual paintings. In the experimental section a series of colorants are investigated concerning the effects of accelerated ageing on experimental painting tables, prepared as watercolour and gouache layers on paper ground. The resulting samples are subject to colorimetric, and spectroscopic measurements; and analogous analytical procedures are applied on samples taken from selected paintings belonging to the Costakis Collection. A systematic comparative study of all data permits evaluating the materials used as to their stability towards exstrincic factors, and proposing degradation routes, in order to assist museum curators and conservators in every concrete case related to the broad spectrum of pigments examined.","PeriodicalId":8193,"journal":{"name":"Annali di chimica","volume":"97 7","pages":"447-472"},"PeriodicalIF":0.0,"publicationDate":"2007-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/adic.200790030","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41040279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Provenance Determination of Vinica Terra Cotta Icons Using Self-Organising Maps 利用自组织地图确定Vinica terroctta图标的来源

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790036

Vinka Tanevska, Igor Kuzmanovski, Orhideja Grupče

引用次数: 4

Notices to Authors: Annali di Chimica 7/2007 作者须知:化学年鉴7/2007

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790041

引用次数: 0

Large Sample Neutron Activation Analysis: A Challenge in Cultural Heritage Studies 大样本中子活化分析:文化遗产研究中的一个挑战

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790033

Ion E. Stamatelatos, Faidra Tzika

引用次数: 3

Metallographic Approach to the Investigation of Metallic Archaeological Objects 金属考古器物调查的金相学方法

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790037

Maria Rosa Pinasco, Maria Giuseppina Ienco, Paolo Piccardo, Gabriella Pellati, Enrica Stagno

{"title":"Metallographic Approach to the Investigation of Metallic Archaeological Objects","authors":"Maria Rosa Pinasco, Maria Giuseppina Ienco, Paolo Piccardo, Gabriella Pellati, Enrica Stagno","doi":"10.1002/adic.200790037","DOIUrl":"10.1002/adic.200790037","url":null,"abstract":"Metallic objects are considered among the most significant findings in Cultural Heritage and represent the ‘culture of Materials’ and the habits of an historical period and of a population. They also preserve traces of time: from the transformation of the ores in metal (by smelting) to the degradation from metal to oxidised compounds (by corrosion processes). Metallography, historically devoted to connect the microstructural features to production processes and to chemical-physical-mechanical properties is a powerful and relatively easy approach to characterise metallic findings. All analytical tools and methods in the hands of a metallographer are improved through experience and practice and provide a large number of information (elemental composition, primary and secondary microstructures, surface treatments, corrosion rate, original ores traces) by the preparation of a fairly small microdestructive sample. A wise and careful use of the metallography allows the balance “object sacrifice / knowledge improvement” to lean on the right side contributing to the hard work of rebuilding humankind history. Beside a description of a research protocol some practical examples concerning archaeological findings are presented in this paper.","PeriodicalId":8193,"journal":{"name":"Annali di chimica","volume":"97 7","pages":"553-574"},"PeriodicalIF":0.0,"publicationDate":"2007-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/adic.200790037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40973746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Studies in Organic Archaeometry VII - Differentiation of Wood and Bark Pitches by Pyrolysis Capillary Gas Chromatography (PY-CGC) 有机古测量学研究——热解毛细管气相色谱法(PY-CGC)鉴别木沥青和树皮沥青

Annali di chimica Pub Date : 2007-05-14 DOI: 10.1002/adic.200790034

L. Puchinger, F. Sauter, S. Leder, K. Varmuza

引用次数: 6