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Analyte | Method | Supporting media | Analytical instrument | LOD | Linearity range | QA/QC studies | Analyzed samples | Interference study | Ref |
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Hg(II) | Colorimetric | Gold nanoparticles | Dark-field microscope | 1.4 pM | — | Recoveries were 98.3 and 110.0% for river and industrial wastewater, respectively | River and industrial wastewater | 25 nM concentrations of Pb2+, Ni2+, Fe2+, Cd2+, Zn2+, Co2+, and Mn2+ did not interfere in the determination of Hg (II) | [49] |
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Hg(II) | Electrochemiluminescence | Gold nanoparticles | Potentiostat PG340 | 5.1 pM | — | Results were compared with AFS measurements | Tap and lake waters | The method was selective for Hg determination in presence of Cd2+, Co2+, Cu2+, Fe2+, Mg2+, Mn2+, Pb2+, Al3+, and Fe3+ | [50] |
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Hg(0) | Thermal desorption | — | Direct milestone analyzer | — | — | Accuracy was verified with testing the SRM (NIST-2711) and CRM (GBW-GBW 08301 RCV 8221) | Soil samples | — | [56] |
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Hg(II) | Electrochemiluminescence | γ-Polyglutamic acid-grapheme-luminol | Chemiluminescence analyzer | 1.0 × 10−6 μl/L | 2.0 × 10−6–0.02 μl/L | The RSD values for reproducibility of biosensor were 6.2%; the results were compared with ICP-MS | River water samples | No interference of Pb2+, Zn2+, Cu2+, Mg2+, and Cd2+ was observed | [144] |
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Hg speciation | Liquid-liquid-liquid microextraction | 18-crown-6 | Electrophoresis | 0.005–0.03 (Hg2+), 0.004–0.027 (Me Hg), 0.001–0.0075 (PhHg) μM | 0.01–1 μM | The RSD values of the reproducibility tests were less than 13.0% | Hair and water samples | — | [90] |
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Hg(0) | UV-light generation | Multimode diode lasers | Photomultiplier modules | 0.12 μM | 0–60 μM | The coefficient of linear regression was obtained as = 0.998 | — | — | [101] |
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Total Hg | — | — | Direct mercury analyzer | — | — | — | Fish samples | Vanadium also determined along with mercury | [86] |
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MeHg | ISO-17025 | — | Advanced mercury analyzer | 9.0 × 10−6 μg | 9.0 × 10−6–0.003 μg | CRMs (IAEA-436, DOLT-2, TORT-2, IAEA-452) were analyzed; the RSD values were in the range of 1.7–4.5% | Marine biota samples | — | [65] |
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Total Hg | — | — | Direct mercury analyzer | 0.0027 μg/g | 0.002–0.15 μg | Recoveries of Hg were in the range of 98.9–106.1%; CRM (DORM-3) was analyzed | Animal tissues | — | [66] |
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Total Hg | — | — | Direct mercury analyzer (DMA-80) | | 0–50 ng | SRM (NIST-1633b) and Rice fluor-NIES-10 (Japan) were analyzed | Human hair and nails | — | [57] |
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Total Hg | Platinum trap | — | Combustion mercury analyzer (MA 3000) | 0.00027 μg/g | — | CRMs (INCT-PVTL-6) and STRP-IS3 were analyzed | Tobacco samples | — | [67] |
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Total Hg | Colorimetric | Lysine | Anisotropic gold nanoparticles | 27 pM | 0.01–1.0 nM | — | Deionized and tap waters | No interference of As3+, Cr3+, Cd2+, Pb2+, Ni2+, Zn2+, and Ba2+ was observed | [51] |
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Total Hg | US EPA method 7473 | | Direct mercury analyzer | — | — | Method was compared with TD-AAS results | Sediments | — | [93] |
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Hg(II) | Electrochemiluminescent | Graphene coupled quantum dots | MPI-A multifunctional electrochemical analytical system | 0.0003 μM | 0.2–5 μM | The RSD values in the determination of Hg(II) real samples were in the range of 2.4–7.5% | Spiked and real water samples | No interference of Cu2+, Pb2+, Ni2+, and Cd2+ was observed | [145] |
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Hg(II) | Photoelectrochemical | CdS quantum dots | Atomic force microscope | 6.0 × 10−10 M | 3.0 × 10−9–1.0 × 10−7 M | — | — | 100-fold Cr3+, Fe3+, Pb2+, Cd2+, Cu2+, Mn2+, Zn2+, Al3+, and Co3+ did not interfere | [87] |
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