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1. Further analysis of rat myocardium contractility changes associated with a subchronic lead intoxication

Author:
Protsenko, Yuri L.; Katsnelson, Boris A.; Klinova, Svetlana V.; Lookin, Oleg N.; Balakin, Alexander A.; Nikitina, Larisa V.; Gerzen, Oksana P.; Nabiev, Salavat R.; Minigalieva, Ilzira A.; Privalova, Larisa I.; Gurvich, Vladimir B.; Sutunkova, Marina P.; Katsnelson, Leonid B.
Source:
Food and chemical toxicology 2019 v.125 pp. 233-241
ISSN:
0278-6915
Subject:
lead; lead acetate,   etc   ; males; muscles; myocardium; myosin; poisoning; rats;     Show all 8 Subjects
Abstract:
... A moderate subchronic lead intoxication was observed in male rats after repeated intraperitoneal injections of lead acetate. Right ventricular trabeculae and papillary muscles were isolated for in vitro studying of the contraction-relaxation cycle under isotonic and physiological loading. The contractile function of the myocardium was also assessed by measuring the velocity of thin filament moveme ...
DOI:
10.1016/j.fct.2018.12.054

2. True exposure to lead at the tap: Insights from proportional sampling, regulated sampling and water use monitoring

Author:
Riblet, Cécile; Deshommes, Elise; Laroche, Laurent; Prévost, Michèle
Source:
Water research 2019 v.156 pp. 327-336
ISSN:
0043-1354
Subject:
lead,   etc   ; households; monitoring; water utilization;     Show all 4 Subjects
Abstract:
... This work aimed to evaluate the ability of four regulatory sampling protocols to accurately determine weekly water lead levels (WLLs) of exposure at the kitchen tap in twenty-nine households with or without a lead service line (LSL). Proportional sampling was used as the gold standard to which the other protocols, 5-min flush, 30-min stagnation, 6-h stagnation and random daytime were compared. Ran ...
DOI:
10.1016/j.watres.2019.03.005

3. High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite

Author:
Ma, Chunqing; Shen, Dong; Huang, Bin; Li, Xiaocui; Chen, Wen-Cheng; Lo, Ming-Fai; Wang, Pengfei; Hon-Wah Lam, Michael; Lu, Yang; Ma, Biwu; Lee, Chun-Sing
Source:
Journal of materials chemistry A 2019 v.7 no.15 pp. 8811-8817
ISSN:
2050-7496
Subject:
lead,   etc   ; chemistry; lighting; solar cells;     Show all 4 Subjects
Abstract:
... Molecular level one-dimensional (1D) metal halide perovskites possessing large exciton binding energies are generally considered unfavorable for photovoltaic devices. To date, applying 1D perovskites as active materials for solar cells has not been as well explored as 3D and 2D perovskites. Herein, we report a new low-dimensional hybrid perovskite based on 1D 1,4-benzene diammonium lead iodide (BD ...
DOI:
10.1039/c9ta01859j

4. Hanzhong bronzes and highly radiogenic lead in Shang period China

Author:
Chen, Kunlong; Mei, Jianjun; Rehren, Thilo; Liu, Siran; Yang, Wei; Martinón-Torres, Marcos; Zhao, Congcang; Hirao, Yoshimitsu; Chen, Jianli; Liu, Yu
Source:
Journal of archaeological science 2019 v.101 pp. 131-139
ISSN:
0305-4403
Subject:
lead,   etc   ; archaeology; isotopes; provenance; China;     Show all 5 Subjects
Abstract:
... For decades, the origin of the bronzes with distinct highly radiogenic lead isotopic ratios in Shang period China has been a puzzle. This paper presents new lead isotope data for bronze objects from the Hanzhong region, one of the key regional bronze cultures during Shang period China. On the basis of a synthetical investigation of the typological, chemical and lead isotopic features of Hanzhong b ...
DOI:
10.1016/j.jas.2018.11.010

5. Inorganic–organic hybridization induced uniaxial zero thermal expansion in MC₄O₄ (M = Ba, Pb)

Author:
Liu, Zhanning; Lin, Kun; Ren, Yang; Kato, Kenichi; Cao, Yili; Deng, Jinxia; Chen, Jun; Xing, Xianran
Source:
Chemical communications 2019 v.55 no.28 pp. 4107-4110
ISSN:
1364-548X
Subject:
lead,   etc   ; barium; chemical reactions; temperature; thermal expansion;     Show all 5 Subjects
Abstract:
... We report two inorganic–organic hybrid materials with pillar-layered architectures, BaC₄O₄ and PbC₄O₄, which show uniaxial zero thermal expansion (ZTE) along the hybrid direction over a wide temperature range. The local structure and lattice dynamic investigations reveal that the ZTE derives from the cooperation of the NTE of the inorganic Ba–O (or Pb–O) layer and the PTE of the squarate pillar. ...
DOI:
10.1039/c9cc00226j

6. Defect structure in δ-Bi₅PbY₂O₁₁.₅

Author:
Borowska-Centkowska, Anna; Liu, Xi; Krynski, Marcin; Leszczynska, Marzena; Wrobel, Wojciech; Malys, Marcin; Hull, Stephen; Norberg, Stefan T.; Krok, Franciszek; Abrahams, Isaac
Source:
RSC advances 2019 v.9 no.17 pp. 9640-9653
ISSN:
2046-2069
Subject:
lead,   etc   ; cations; models; molecular dynamics; neutron diffraction;     Show all 5 Subjects
Abstract:
... A detailed study of the defect structure in a di-substituted δ-Bi₂O₃ type phase, δ-Bi₅PbY₂O₁₁.₅, is presented. Using a combination of conventional Rietveld analysis of neutron diffraction data, reverse Monte Carlo (RMC) analysis of total neutron scattering data and ab initio molecular dynamics (MD) simulations, both average and local structures have been characterized. δ-Bi₅PbY₂O₁₁.₅ represents a ...
DOI:
10.1039/c9ra01233h

7. High-Precision Measurements of the Isotopic Composition of Common Lead Using MC-ICPMS: Comparison of Calibration Strategies Based on Full Gravimetric Isotope Mixture and Regression Models

Author:
Tong, Shuoyun; Meija, Juris; Zhou, Lian; Methven, Brad; Mester, Zoltán; Yang, Lu
Source:
Analytical chemistry 2019 v.91 no.6 pp. 4164-4171
ISSN:
1520-6882
Subject:
lead,   etc   ; calibration; isotopes; regression analysis; thallium;     Show all 5 Subjects
Abstract:
... The determination of isotope ratios of lead finds many important applications in earth and planetary sciences. In this study, we report the first independent and fully calibrated absolute isotope ratio measurements of a common lead since the seminal work by the NIST in the 1960s, which has provided the widely used standards SRM 981 and SRM 982. This work employs MC-ICPMS for the absolute isotope r ...
DOI:
10.1021/acs.analchem.9b00020

8. Lead and copper release from full and partially replaced harvested lead service lines: Impact of stagnation time prior to sampling and water quality

Author:
Doré, Evelyne; Deshommes, Elise; Laroche, Laurent; Nour, Shokoufeh; Prévost, Michèle
Source:
Water research 2019 v.150 pp. 380-391
ISSN:
0043-1354
Subject:
lead,   etc   ; copper; pH; protocols; water quality;     Show all 5 Subjects
Abstract:
... Partial lead service line replacement (PLSLR) results in the addition of a new galvanic connection and can increase lead concentrations at the tap. Focus has been given to minimizing lead release after PLSLR, but little information is available on the impact of lead remedial actions on copper concentrations, especially before passivation occurs. The impact of water quality (decreased chloride-to-s ...
DOI:
10.1016/j.watres.2018.11.076

9. Sensitizing Singlet Fission with Perovskite Nanocrystals

Author:
Lu, Haipeng; Chen, Xihan; Anthony, John E.; Johnson, Justin C.; Beard, Matthew C.
Source:
Journal of the American Chemical Society 2019 v.141 no.12 pp. 4919-4927
ISSN:
1520-5126
Subject:
lead,   etc   ; energy transfer; nanocrystals; photons; semiconductors;     Show all 5 Subjects
Abstract:
... The marriage of colloidal semiconductor nanocrystals and functional organic molecules has brought unique opportunities in emerging photonic and optoelectronic applications. Traditional semiconductor nanocrystals have been widely demonstrated to initiate efficient triplet energy transfer at the nanocrystal–acene interface. Herein, we report that unlike conventional semiconductor nanocrystals, lead ...
DOI:
10.1021/jacs.8b13562

10. Effect of Grain Boundaries on Charge Transport in Methylammonium Lead Iodide Perovskite Thin Films

Author:
Khassaf, Hamidreza; Yadavalli, Srinivas K.; Zhou, Yuanyuan; Padture, Nitin P.; Kingon, Angus I.
Source:
Journal of physical chemistry 2019 v.123 no.9 pp. 5321-5325
ISSN:
1932-7455
Subject:
lead,   etc   ; activation energy; iodine; physical chemistry;     Show all 4 Subjects
Abstract:
... Methylammonium lead iodide (MAPbI₃) has attracted great interest as an organic–inorganic hybrid perovskite for photovoltaic applications. Vacancy-mediated ion migration is one of the dominant carrier transport mechanisms in MAPbI₃. Our previous work clarified the nature of migrating species and their moderating effect on electronic transport. However, to develop strategies to mitigate ion migratio ...
DOI:
10.1021/acs.jpcc.9b00538

11. Nonvolatile and Reversible Ferroelectric Control of Electronic Properties of Bi₂Te₃ Topological Insulator Thin Films Grown on Pb(Mg₁/₃Nb₂/₃)O₃–PbTiO₃ Single Crystals

Author:
Yan, Jian-Min; Xu, Zhi-Xue; Chen, Ting-Wei; Xu, Meng; Zhang, Chao; Zhao, Xu-Wen; Liu, Fei; Guo, Lei; Yan, Shu-Ying; Gao, Guan-Yin; Wang, Fei-Fei; Zhang, Jin-Xing; Dong, Si-Ning; Li, Xiao-Guang; Luo, Hao-Su; Zhao, Weiyao; Zheng, Ren-Kui
Source:
ACS applied materials & interfaces 2019 v.11 no.9 pp. 9548-9556
ISSN:
1944-8252
Subject:
lead,   etc   ; ambient temperature; crystals; electrodes; topology;     Show all 5 Subjects
Abstract:
... Single-phase (00l)-oriented Bi₂Te₃ topological insulator thin films have been deposited on (111)-oriented ferroelectric 0.71Pb(Mg₁/₃Nb₂/₃)O₃–0.29PbTiO₃ (PMN–PT) single-crystal substrates. Taking advantage of the nonvolatile polarization charges induced by the polarization direction switching of PMN–PT substrates at room temperature, the carrier density, Fermi level, magnetoconductance, conductance ...
DOI:
10.1021/acsami.8b20406

12. Study of the long-term impacts of treatments on lead release from full and partially replaced harvested lead service lines

Author:
Doré, Evelyne; Deshommes, Elise; Laroche, Laurent; Nour, Shokoufeh; Prévost, Michèle
Source:
Water research 2019 v.149 pp. 566-577
ISSN:
0043-1354
Subject:
lead,   etc   ; copper; corrosion; orthophosphates; pH; pipes; Quebec;     Show all 7 Subjects
Abstract:
... Long-term (155 weeks) Pb concentrations, following partial lead service lines replacements (PLSLR), were measured in a flow through pilot made of harvested lead service lines (LSL) from the distribution system of the City of Montreal. The present study also investigates how release of Pb from full and partial LSLs is influenced by: pipe diameter, decrease in chloride-to-sulfate mass ratio (CSMR) f ...
DOI:
10.1016/j.watres.2018.11.037

13. Outcome expectancy: A key factor to understanding childhood exposure to nature and children's pro-environmental behavior

Author:
Collado, Silvia; Evans, Gary W.
Source:
Journal of environmental psychology 2019 v.61 pp. 30-36
ISSN:
0272-4944
Subject:
lead,   etc   ; attitudes and opinions; childhood; children; psychology;     Show all 5 Subjects
Abstract:
... Identifying mechanisms that lead children to behave in a pro-environmental way is an important conceptual and practical concern. Empirical evidence suggests that contact with nature (CN) is positively associated with environmental behavior (EB). However, this relation is usually low to moderate suggesting the operation of other factors in this relation. This study focuses on outcome expectancy, de ...
DOI:
10.1016/j.jenvp.2018.12.001

14. Iodide-ion conduction in methylammonium lead iodide perovskite: some extraordinary aspects

Author:
De Souza, Roger A.; Barboni, Denis
Source:
Chemical communications 2019 v.55 no.8 pp. 1108-1111
ISSN:
1364-548X
Subject:
lead,   etc   ; chemical reactions; diffusivity; iodides; iodine; models;     Show all 6 Subjects
Abstract:
... A recent model of iodide-ion conduction in methylammonium lead iodide perovskite (CH₃NH₃PbI₃) is discussed. Issues include the low activation barrier of vacancy migration and the high diffusivities of iodine vacancies and interstitials. Comparisons are also made with the behaviour of point defects in the oxide perovskite SrTiO₃. ...
DOI:
10.1039/c8cc09236b

15. Rational chemical doping of metal halide perovskites

Author:
ZhangThese authors contributed equally to this work., Xinyuan; Li, Lina; Sun, Zhihua; Luo, Junhua
Source:
Chemical Society reviews 2019 v.48 no.2 pp. 517-539
ISSN:
1460-4744
Subject:
lead,   etc   ; absorption; physicochemical properties; solar energy; toxicity;     Show all 5 Subjects
Abstract:
... Metal halide perovskites benefit from the combination of wide absorption, high carrier mobility, defect tolerance, moderate exciton binding energies, and versatility of solution processes, showing great promise in photovoltaics and optoelectronics. However, the issues of long-term instability and toxicity of lead are supposed to limit their further practical applications. Chemical doping of an imp ...
DOI:
10.1039/c8cs00563j

16. The flotation separation of galena and pyrite using serpentine as depressant

Author:
Feng, Bo; Zhang, Wenpu; Guo, Yutao; Wang, Tao; Luo, Guodong; Wang, Huihui; He, Guichun
Source:
Powder technology 2019 v.342 pp. 486-490
ISSN:
0032-5910
Subject:
lead,   etc   ; potassium; powders; pyrite; serpentine; toxicity;     Show all 6 Subjects
Abstract:
... Toxic inorganic depressants are commonly used in the flotation separation of polymetallic sulfide ores and it is desirable that they can be replaced by environmentally benign substances. Serpentine, a common gangue mineral encountered in complex sulfide ores, has been found to be an efficient depressant for ferric sulfide (e.g., pyrite). Serpentine was tested as a potential selective depressant in ...
DOI:
10.1016/j.powtec.2018.09.070

17. Ultrasensitive Detection of Pb2+ Based on a DNAzyme and Digital PCR

Author:
Zhang, Tao; Liu, Cong; Zhou, Wuping; Jiang, Keming; Yin, Chenyu; Liu, Cong; Zhang, Zhiqiang; Li, Haiwen
Source:
Journal of Analytical Methods in Chemistry (Online) 2019 v.2019
ISSN:
2090-8873
Subject:
lead,   etc   ; DNA; droplets; polymerase chain reaction;     Show all 4 Subjects
Abstract:
... In this study, an ultrasensitive detection method for aqueous Pb²⁺ based on digital polymerase chain reaction (dPCR) technology and a Pb²⁺-dependent DNAzyme was developed. In the presence of Pb²⁺, the Gr-5 DNAzyme was activated and catalyzed the hydrolytic cleavage of the substrate strand, resulting in an increase in the amount of template DNA available for dPCR and a resultant change in the numbe ...
DOI:
10.1155/2019/3528345

18. A facile lead acetate conversion process for synthesis of high‐purity alpha‐lead oxide derived from spent lead‐acid batteries

Author:
Yu, Wenhao; Yang, Jiakuan; Li, Mingyang; Hu, Yuchen; Liang, Sha; Wang, Junxiong; Zhang, Peiyuan; Xiao, Keke; Hou, Huijie; Hu, Jingping; Kumar, Ramachandran Vasant
Source:
Journal of chemical technology and biotechnology 2019 v.94 no.1 pp. 88-97
ISSN:
0268-2575
Subject:
lead; lead acetate,   etc   ; barium; batteries; hydrogen peroxide; iron; leaching; pH; redox potential; sodium hydroxide;     Show all 10 Subjects
Abstract:
... BACKGROUND: The lead oxide product recovered from spent lead‐acid battery paste via the hydrometallurgical route usually contains many impurity elements, i.e. Ba and Fe. In this paper, a facile lead acetate conversion process was proposed for synthesis of high‐purity alpha‐lead oxide (α‐PbO) derived from spent lead‐acid batteries. RESULTS: The desulfurized lead paste was leached with acetic acid a ...
DOI:
10.1002/jctb.5748

19. Chemoresponsive Nanofluidic Pump That Turns Off in the Presence of Lead Ion

Author:
Wu, Xiaojian; Experton, Juliette; Xu, Weihuang; Martin, Charles R.
Source:
Analytical chemistry 2018 v.90 no.12 pp. 7715-7720
ISSN:
1520-6882
Subject:
lead,   etc   ; chemical species; electroosmosis;     Show all 3 Subjects
Abstract:
... There are many applications that require the integration of a pump and a chemical sensor so that the solution being pumped can be analyzed in real time for a specific chemical species and the flow adjusted according to the measured concentration of that species. We describe here an alternative strategy: a chemoresponsive pump where a single device acts as both the sensor and pump simultaneously. W ...
DOI:
10.1021/acs.analchem.8b01623

20. Stable lead(ii) boroxides

Author:
Someşan, Adrian-Alexandru; Le Coz, Erwann; Roisnel, Thierry; Silvestru, Cristian; Sarazin, Yann
Source:
Chemical communications 2018 v.54 no.42 pp. 5299-5302
ISSN:
1364-548X
Subject:
lead,   etc   ; chemical reactions; protocols;     Show all 3 Subjects
Abstract:
... The first examples of lead(ii) boroxides, [Pb(OB{CH(SiMe₃)₂}₂)₂] (1) and [{N^C}PbOB{CH(SiMe₃)₂}₂] (5; N^C = 2-Me₂NCH₂C₆H₄), were prepared via simple protocols. These structurally characterised compounds are stable and, unlike lead(ii) alkoxides and siloxides, do not trigger uncontrolled formation of lead(ii) oxoclusters. ...
DOI:
10.1039/c8cc02459f